Module snd¶

The core ALSA module. It is used by all ALSA card drivers.It takes the following options which have global effects.

major

major number for sound driver;Default: 116

cards_limit

limiting card index for auto-loading (1-8);Default: 1;For auto-loading more than one card, specify this optiontogether with snd-card-X aliases.

slots

Reserve the slot index for the given driver;This option takes multiple strings.SeeModule Autoloading Support section for details.

debug

Specifies the debug message level;(0 = disable debug prints, 1 = normal debug messages,2 = verbose debug messages);This option appears only whenCONFIG_SND_DEBUG=y.This option can be dynamically changed via sysfs/sys/module/snd/parameters/debug file.

Module snd-pcm-oss¶

The PCM OSS emulation module.This module takes options which change the mapping of devices.

dsp_map

PCM device number maps assigned to the 1st OSS device;Default: 0

adsp_map

PCM device number maps assigned to the 2nd OSS device;Default: 1

nonblock_open

Don’t block opening busy PCM devices;Default: 1

For example, whendsp_map=2, /dev/dsp will be mapped to PCM #2 ofthe card #0. Similarly, whenadsp_map=0, /dev/adsp will be mappedto PCM #0 of the card #0.For changing the second or later card, specify the option withcommas, such likedsp_map=0,1.

nonblock_open option is used to change the behavior of the PCMregarding opening the device. When this option is non-zero,opening a busy OSS PCM device won’t be blocked but returnimmediately with EAGAIN (just like O_NONBLOCK flag).

Module snd-rawmidi¶

This module takes options which change the mapping of devices.similar to those of the snd-pcm-oss module.

midi_map

MIDI device number maps assigned to the 1st OSS device;Default: 0

amidi_map

MIDI device number maps assigned to the 2nd OSS device;Default: 1

Module snd-soc-core¶

The soc core module. It is used by all ALSA card drivers.It takes the following options which have global effects.

prealloc_buffer_size_kbytes

Specify prealloc buffer size in kbytes (default: 512).

Common parameters for top sound card modules¶

Each of top level sound card module takes the following options.

index

index (slot #) of sound card;Values: 0 through 31 or negative;If nonnegative, assign that index number;if negative, interpret as a bitmask of permissible indices;the first free permitted index is assigned;Default: -1

id

card ID (identifier or name);Can be up to 15 characters long;Default: the card type;A directory by this name is created under /proc/asound/containing information about the card;This ID can be used instead of the index number inidentifying the card

enable

enable card;Default: enabled, for PCI and ISA PnP cards

These options are used for either specifying the order of instances orcontrolling enabling and disabling of each one of the devices if thereare multiple devices bound with the same driver. For example, there aremany machines which have two HD-audio controllers (one for HDMI/DPaudio and another for onboard analog). In most cases, the second one isin primary usage, and people would like to assign it as the firstappearing card. They can do it by specifying “index=1,0” moduleparameter, which will swap the assignment slots.

Today, with the sound backend like PulseAudio and PipeWire whichsupports dynamic configuration, it’s of little use, but that was ahelp for static configuration in the past.

Module snd-adlib¶

Module for AdLib FM cards.

port

port # for OPL chip

This module supports multiple cards. It does not support autoprobe, sothe port must be specified. For actual AdLib FM cards it will be 0x388.Note that this card does not have PCM support and no mixer; only FMsynthesis.

Make sure you havesbiload from the alsa-tools package available and,after loading the module, find out the assigned ALSA sequencer portnumber throughsbiload-l.

Example output:

Port     Client name                       Port name64:0     OPL2 FM synth                     OPL2 FM Port

Load thestd.sb anddrums.sb patches also supplied bysbiload:

sbiload -p 64:0 std.sb drums.sb

If you use this driver to drive an OPL3, you can usestd.o3 anddrums.o3instead. To have the card produce sound, useaplaymidi from alsa-utils:

aplaymidi -p 64:0 foo.mid

Module snd-ad1816a¶

Module for sound cards based on Analog Devices AD1816A/AD1815 ISA chips.

clockfreq

Clock frequency for AD1816A chip (default = 0, 33000Hz)

This module supports multiple cards, autoprobe and PnP.

Module snd-ad1848¶

Module for sound cards based on AD1848/AD1847/CS4248 ISA chips.

port

port # for AD1848 chip

irq

IRQ # for AD1848 chip

dma1

DMA # for AD1848 chip (0,1,3)

This module supports multiple cards. It does not support autoprobethus main port must be specified!!! Other ports are optional.

The power-management is supported.

Module snd-ad1889¶

Module for Analog Devices AD1889 chips.

ac97_quirk

AC’97 workaround for strange hardware;See the description of intel8x0 module for details.

This module supports multiple cards.

Module snd-ali5451¶

Module for ALi M5451 PCI chip.

pcm_channels

Number of hardware channels assigned for PCM

spdif

Support SPDIF I/O;Default: disabled

This module supports one chip and autoprobe.

The power-management is supported.

Module snd-als100¶

Module for sound cards based on Avance Logic ALS100/ALS120 ISA chips.

This module supports multiple cards, autoprobe and PnP.

The power-management is supported.

Module snd-als300¶

Module for Avance Logic ALS300 and ALS300+

This module supports multiple cards.

The power-management is supported.

Module snd-als4000¶

Module for sound cards based on Avance Logic ALS4000 PCI chip.

joystick_port

port # for legacy joystick support;0 = disabled (default), 1 = auto-detect

This module supports multiple cards, autoprobe and PnP.

The power-management is supported.

Module snd-asihpi¶

Module for AudioScience ASI soundcards

enable_hpi_hwdep

enable HPI hwdep for AudioScience soundcard

This module supports multiple cards.The driver requires the firmware loader support on kernel.

Module snd-atiixp¶

Module for ATI IXP 150/200/250/400 AC97 controllers.

ac97_clock

AC’97 clock (default = 48000)

ac97_quirk

AC’97 workaround for strange hardware;SeeAC97 Quirk Option section below.

ac97_codec

Workaround to specify which AC’97 codec instead of probing.If this works for you file a bug with yourlspci -vn output.(-2 = Force probing, -1 = Default behavior, 0-2 = Use thespecified codec.)

spdif_aclink

S/PDIF transfer over AC-link (default = 1)

This module supports one card and autoprobe.

ATI IXP has two different methods to control SPDIF output. One isover AC-link and another is over the “direct” SPDIF output. Theimplementation depends on the motherboard, and you’ll need tochoose the correct one via spdif_aclink module option.

The power-management is supported.

Module snd-atiixp-modem¶

Module for ATI IXP 150/200/250 AC97 modem controllers.

This module supports one card and autoprobe.

Note: The default index value of this module is -2, i.e. the firstslot is excluded.

The power-management is supported.

Module snd-au8810, snd-au8820, snd-au8830¶

Module for Aureal Vortex, Vortex2 and Advantage device.

pcifix

Control PCI workarounds;0 = Disable all workarounds,1 = Force the PCI latency of the Aureal card to 0xff,2 = Force the Extend PCI#2 Internal Master for EfficientHandling of Dummy Requests on the VIA KT133 AGP Bridge,3 = Force both settings,255 = Autodetect what is required (default)

This module supports all ADB PCM channels, ac97 mixer, SPDIF, hardwareEQ, mpu401, gameport. A3D and wavetable support are still in development.Development and reverse engineering work is being coordinated athttps://savannah.nongnu.org/projects/openvortex/SPDIF output has a copy of the AC97 codec output, unless you use thespdif pcm device, which allows raw data passthru.The hardware EQ hardware and SPDIF is only present in the Vortex2 andAdvantage.

Note: Some ALSA mixer applications don’t handle the SPDIF sample ratecontrol correctly. If you have problems regarding this, tryanother ALSA compliant mixer (alsamixer works).

Module snd-azt1605¶

Module for Aztech Sound Galaxy soundcards based on the Aztech AZT1605chipset.

port

port # for BASE (0x220,0x240,0x260,0x280)

wss_port

port # for WSS (0x530,0x604,0xe80,0xf40)

irq

IRQ # for WSS (7,9,10,11)

dma1

DMA # for WSS playback (0,1,3)

dma2

DMA # for WSS capture (0,1), -1 = disabled (default)

mpu_port

port # for MPU-401 UART (0x300,0x330), -1 = disabled (default)

mpu_irq

IRQ # for MPU-401 UART (3,5,7,9), -1 = disabled (default)

fm_port

port # for OPL3 (0x388), -1 = disabled (default)

This module supports multiple cards. It does not support autoprobe:port,wss_port,irq anddma1 have to be specified.The other values are optional.

port needs to match the BASE ADDRESS jumper on the card (0x220 or 0x240)or the value stored in the card’s EEPROM for cards that have an EEPROM andtheir “CONFIG MODE” jumper set to “EEPROM SETTING”. The other values canbe chosen freely from the options enumerated above.

Ifdma2 is specified and different fromdma1, the card will operate infull-duplex mode. Whendma1=3, onlydma2=0 is valid and the only way toenable capture since only channels 0 and 1 are available for capture.

Generic settings areport=0x220wss_port=0x530irq=10dma1=1dma2=0mpu_port=0x330mpu_irq=9fm_port=0x388.

Whatever IRQ and DMA channels you pick, be sure to reserve them forlegacy ISA in your BIOS.

Module snd-azt2316¶

Module for Aztech Sound Galaxy soundcards based on the Aztech AZT2316chipset.

port

port # for BASE (0x220,0x240,0x260,0x280)

wss_port

port # for WSS (0x530,0x604,0xe80,0xf40)

irq

IRQ # for WSS (7,9,10,11)

dma1

DMA # for WSS playback (0,1,3)

dma2

DMA # for WSS capture (0,1), -1 = disabled (default)

mpu_port

port # for MPU-401 UART (0x300,0x330), -1 = disabled (default)

mpu_irq

IRQ # for MPU-401 UART (5,7,9,10), -1 = disabled (default)

fm_port

port # for OPL3 (0x388), -1 = disabled (default)

This module supports multiple cards. It does not support autoprobe:port,wss_port,irq anddma1 have to be specified.The other values are optional.

port needs to match the BASE ADDRESS jumper on the card (0x220 or 0x240)or the value stored in the card’s EEPROM for cards that have an EEPROM andtheir “CONFIG MODE” jumper set to “EEPROM SETTING”. The other values canbe chosen freely from the options enumerated above.

Ifdma2 is specified and different fromdma1, the card will operate infull-duplex mode. Whendma1=3, onlydma2=0 is valid and the only way toenable capture since only channels 0 and 1 are available for capture.

Generic settings areport=0x220wss_port=0x530irq=10dma1=1dma2=0mpu_port=0x330mpu_irq=9fm_port=0x388.

Whatever IRQ and DMA channels you pick, be sure to reserve them forlegacy ISA in your BIOS.

Module snd-aw2¶

Module for Audiowerk2 sound card

This module supports multiple cards.

Module snd-azt2320¶

Module for sound cards based on Aztech System AZT2320 ISA chip (PnP only).

This module supports multiple cards, PnP and autoprobe.

The power-management is supported.

Module snd-azt3328¶

Module for sound cards based on Aztech AZF3328 PCI chip.

joystick

Enable joystick (default off)

This module supports multiple cards.

Module snd-bt87x¶

Module for video cards based on Bt87x chips.

digital_rate

Override the default digital rate (Hz)

load_all

Load the driver even if the card model isn’t known

This module supports multiple cards.

Note: The default index value of this module is -2, i.e. the firstslot is excluded.

Module snd-ca0106¶

Module for Creative Audigy LS and SB Live 24bit

This module supports multiple cards.

Module snd-cmi8330¶

Module for sound cards based on C-Media CMI8330 ISA chips.

isapnp

ISA PnP detection - 0 = disable, 1 = enable (default)

withisapnp=0, the following options are available:

wssport

port # for CMI8330 chip (WSS)

wssirq

IRQ # for CMI8330 chip (WSS)

wssdma

first DMA # for CMI8330 chip (WSS)

sbport

port # for CMI8330 chip (SB16)

sbirq

IRQ # for CMI8330 chip (SB16)

sbdma8

8bit DMA # for CMI8330 chip (SB16)

sbdma16

16bit DMA # for CMI8330 chip (SB16)

fmport

(optional) OPL3 I/O port

mpuport

(optional) MPU401 I/O port

mpuirq

(optional) MPU401 irq #

This module supports multiple cards and autoprobe.

The power-management is supported.

Module snd-cmipci¶

Module for C-Media CMI8338/8738/8768/8770 PCI sound cards.

mpu_port

port address of MIDI interface (8338 only):0x300,0x310,0x320,0x330 = legacy port,1 = integrated PCI port (default on 8738),0 = disable

fm_port

port address of OPL-3 FM synthesizer (8x38 only):0x388 = legacy port,1 = integrated PCI port (default on 8738),0 = disable

soft_ac3

Software-conversion of raw SPDIF packets (model 033 only) (default = 1)

joystick_port

Joystick port address (0 = disable, 1 = auto-detect)

This module supports autoprobe and multiple cards.

The power-management is supported.

Module snd-cs4231¶

Module for sound cards based on CS4231 ISA chips.

port

port # for CS4231 chip

mpu_port

port # for MPU-401 UART (optional), -1 = disable

irq

IRQ # for CS4231 chip

mpu_irq

IRQ # for MPU-401 UART

dma1

first DMA # for CS4231 chip

dma2

second DMA # for CS4231 chip

This module supports multiple cards. This module does not support autoprobethus main port must be specified!!! Other ports are optional.

The power-management is supported.

Module snd-cs4236¶

Module for sound cards based on CS4232/CS4232A,CS4235/CS4236/CS4236B/CS4237B/CS4238B/CS4239 ISA chips.

isapnp

ISA PnP detection - 0 = disable, 1 = enable (default)

withisapnp=0, the following options are available:

port

port # for CS4236 chip (PnP setup - 0x534)

cport

control port # for CS4236 chip (PnP setup - 0x120,0x210,0xf00)

mpu_port

port # for MPU-401 UART (PnP setup - 0x300), -1 = disable

fm_port

FM port # for CS4236 chip (PnP setup - 0x388), -1 = disable

irq

IRQ # for CS4236 chip (5,7,9,11,12,15)

mpu_irq

IRQ # for MPU-401 UART (9,11,12,15)

dma1

first DMA # for CS4236 chip (0,1,3)

dma2

second DMA # for CS4236 chip (0,1,3), -1 = disable

This module supports multiple cards. This module does not support autoprobe(if ISA PnP is not used) thus main port and control port must bespecified!!! Other ports are optional.

The power-management is supported.

This module is aliased as snd-cs4232 since it provides the oldsnd-cs4232 functionality, too.

Module snd-cs4281¶

Module for Cirrus Logic CS4281 soundchip.

dual_codec

Secondary codec ID (0 = disable, default)

This module supports multiple cards.

The power-management is supported.

Module snd-cs46xx¶

Module for PCI sound cards based on CS4610/CS4612/CS4614/CS4615/CS4622/CS4624/CS4630/CS4280 PCI chips.

external_amp

Force to enable external amplifier.

thinkpad

Force to enable Thinkpad’s CLKRUN control.

mmap_valid

Support OSS mmap mode (default = 0).

This module supports multiple cards and autoprobe.Usually external amp and CLKRUN controls are detected automaticallyfrom PCI sub vendor/device ids. If they don’t work, give the optionsabove explicitly.

The power-management is supported.

Module snd-cs5530¶

Module for Cyrix/NatSemi Geode 5530 chip.

Module snd-cs5535audio¶

Module for multifunction CS5535 companion PCI device

The power-management is supported.

Module snd-ctxfi¶

Module for Creative Sound Blaster X-Fi boards (20k1 / 20k2 chips)

• Creative Sound Blaster X-Fi Titanium Fatal1ty Champion Series

• Creative Sound Blaster X-Fi Titanium Fatal1ty Professional Series

• Creative Sound Blaster X-Fi Titanium Professional Audio

• Creative Sound Blaster X-Fi Titanium

• Creative Sound Blaster X-Fi Elite Pro

• Creative Sound Blaster X-Fi Platinum

• Creative Sound Blaster X-Fi Fatal1ty

• Creative Sound Blaster X-Fi XtremeGamer

• Creative Sound Blaster X-Fi XtremeMusic

reference_rate

reference sample rate, 44100 or 48000 (default)

multiple

multiple to ref. sample rate, 1 or 2 (default)

subsystem

override the PCI SSID for probing;the value consists of SSVID << 16 | SSDID.The default is zero, which means no override.

This module supports multiple cards.

Module snd-darla20¶

Module for Echoaudio Darla20

This module supports multiple cards.The driver requires the firmware loader support on kernel.

Module snd-darla24¶

Module for Echoaudio Darla24

This module supports multiple cards.The driver requires the firmware loader support on kernel.

Module snd-dt019x¶

Module for Diamond Technologies DT-019X / Avance Logic ALS-007 (PnPonly)

This module supports multiple cards. This module is enabled only withISA PnP support.

The power-management is supported.

Module snd-dummy¶

Module for the dummy sound card. This “card” doesn’t do any outputor input, but you may use this module for any application whichrequires a sound card (like RealPlayer).

pcm_devs

Number of PCM devices assigned to each card (default = 1, up to 4)

pcm_substreams

Number of PCM substreams assigned to each PCM (default = 8, up to 128)

hrtimer

Use hrtimer (=1, default) or system timer (=0)

fake_buffer

Fake buffer allocations (default = 1)

When multiple PCM devices are created, snd-dummy gives differentbehavior to each PCM device:* 0 = interleaved with mmap support* 1 = non-interleaved with mmap support* 2 = interleaved without mmap* 3 = non-interleaved without mmap

As default, snd-dummy drivers doesn’t allocate the real buffersbut either ignores read/write or mmap a single dummy page to allbuffer pages, in order to save the resources. If your apps needthe read/ written buffer data to be consistent, pass fake_buffer=0option.

The power-management is supported.

Module snd-echo3g¶

Module for Echoaudio 3G cards (Gina3G/Layla3G)

This module supports multiple cards.The driver requires the firmware loader support on kernel.

Module snd-emu10k1¶

Module for EMU10K1/EMU10k2 based PCI sound cards.

• Sound Blaster Live!

• Sound Blaster PCI 512

• Sound Blaster Audigy

• E-MU APS (partially supported)

• E-MU DAS

extin

bitmap of available external inputs for FX8010 (see below)

extout

bitmap of available external outputs for FX8010 (see below)

seq_ports

allocated sequencer ports (4 by default)

max_synth_voices

limit of voices used for wavetable (64 by default)

max_buffer_size

specifies the maximum size of wavetable/pcm buffers given in MBunit. Default value is 128.

enable_ir

enable IR

This module supports multiple cards and autoprobe.

Input & Output configurations [extin/extout]* Creative Card wo/Digital out [0x0003/0x1f03]* Creative Card w/Digital out [0x0003/0x1f0f]* Creative Card w/Digital CD in [0x000f/0x1f0f]* Creative Card wo/Digital out + LiveDrive [0x3fc3/0x1fc3]* Creative Card w/Digital out + LiveDrive [0x3fc3/0x1fcf]* Creative Card w/Digital CD in + LiveDrive [0x3fcf/0x1fcf]* Creative Card wo/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]* Creative Card w/Digital out + Digital I/O 2 [0x0fc3/0x1f0f]* Creative Card w/Digital CD in + Digital I/O 2 [0x0fcf/0x1f0f]* Creative Card 5.1/w Digital out + LiveDrive [0x3fc3/0x1fff]* Creative Card 5.1 (c) 2003 [0x3fc3/0x7cff]* Creative Card all ins and outs [0x3fff/0x7fff]

The power-management is supported.

Module snd-emu10k1x¶

Module for Creative Emu10k1X (SB Live Dell OEM version)

This module supports multiple cards.

Module snd-ens1370¶

Module for Ensoniq AudioPCI ES1370 PCI sound cards.

• SoundBlaster PCI 64

• SoundBlaster PCI 128

joystick

Enable joystick (default off)

This module supports multiple cards and autoprobe.

The power-management is supported.

Module snd-ens1371¶

Module for Ensoniq AudioPCI ES1371 PCI sound cards.

• SoundBlaster PCI 64

• SoundBlaster PCI 128

• SoundBlaster Vibra PCI

joystick_port

port # for joystick (0x200,0x208,0x210,0x218), 0 = disable(default), 1 = auto-detect

This module supports multiple cards and autoprobe.

The power-management is supported.

Module snd-es1688¶

Module for ESS AudioDrive ES-1688 and ES-688 sound cards.

isapnp

ISA PnP detection - 0 = disable, 1 = enable (default)

mpu_port

port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)

mpu_irq

IRQ # for MPU-401 port (5,7,9,10)

fm_port

port # for OPL3 (option; share the same port as default)

withisapnp=0, the following additional options are available:

port

port # for ES-1688 chip (0x220,0x240,0x260)

irq

IRQ # for ES-1688 chip (5,7,9,10)

dma8

DMA # for ES-1688 chip (0,1,3)

This module supports multiple cards and autoprobe (without MPU-401 port)and PnP with the ES968 chip.

Module snd-es18xx¶

Module for ESS AudioDrive ES-18xx sound cards.

isapnp

ISA PnP detection - 0 = disable, 1 = enable (default)

withisapnp=0, the following options are available:

port

port # for ES-18xx chip (0x220,0x240,0x260)

mpu_port

port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable (default)

fm_port

port # for FM (optional, not used)

irq

IRQ # for ES-18xx chip (5,7,9,10)

dma1

first DMA # for ES-18xx chip (0,1,3)

dma2

first DMA # for ES-18xx chip (0,1,3)

This module supports multiple cards, ISA PnP and autoprobe (without MPU-401port if native ISA PnP routines are not used).Whendma2 is equal withdma1, the driver works as half-duplex.

The power-management is supported.

Module snd-es1938¶

Module for sound cards based on ESS Solo-1 (ES1938,ES1946) chips.

This module supports multiple cards and autoprobe.

The power-management is supported.

Module snd-es1968¶

Module for sound cards based on ESS Maestro-1/2/2E (ES1968/ES1978) chips.

total_bufsize

total buffer size in kB (1-4096kB)

pcm_substreams_p

playback channels (1-8, default=2)

pcm_substreams_c

capture channels (1-8, default=0)

clock

clock (0 = auto-detection)

use_pm

support the power-management (0 = off, 1 = on, 2 = auto (default))

enable_mpu

enable MPU401 (0 = off, 1 = on, 2 = auto (default))

joystick

enable joystick (default off)

This module supports multiple cards and autoprobe.

The power-management is supported.

Module snd-fm801¶

Module for ForteMedia FM801 based PCI sound cards.

tea575x_tuner

Enable TEA575x tuner;1 = MediaForte 256-PCS,2 = MediaForte 256-PCPR,3 = MediaForte 64-PCRHigh 16-bits are video (radio) device number + 1;example: 0x10002 (MediaForte 256-PCPR, device 1)

This module supports multiple cards and autoprobe.

The power-management is supported.

Module snd-gina20¶

Module for Echoaudio Gina20

This module supports multiple cards.The driver requires the firmware loader support on kernel.

Module snd-gina24¶

Module for Echoaudio Gina24

This module supports multiple cards.The driver requires the firmware loader support on kernel.

Module snd-gusclassic¶

Module for Gravis UltraSound Classic sound card.

port

port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)

irq

IRQ # for GF1 chip (3,5,9,11,12,15)

dma1

DMA # for GF1 chip (1,3,5,6,7)

dma2

DMA # for GF1 chip (1,3,5,6,7,-1=disable)

joystick_dac

0 to 31, (0.59V-4.52V or 0.389V-2.98V)

voices

GF1 voices limit (14-32)

pcm_voices

reserved PCM voices

This module supports multiple cards and autoprobe.

Module snd-gusextreme¶

Module for Gravis UltraSound Extreme (Synergy ViperMax) sound card.

port

port # for ES-1688 chip (0x220,0x230,0x240,0x250,0x260)

gf1_port

port # for GF1 chip (0x210,0x220,0x230,0x240,0x250,0x260,0x270)

mpu_port

port # for MPU-401 port (0x300,0x310,0x320,0x330), -1 = disable

irq

IRQ # for ES-1688 chip (5,7,9,10)

gf1_irq

IRQ # for GF1 chip (3,5,9,11,12,15)

mpu_irq

IRQ # for MPU-401 port (5,7,9,10)

dma8

DMA # for ES-1688 chip (0,1,3)

dma1

DMA # for GF1 chip (1,3,5,6,7)

joystick_dac

0 to 31, (0.59V-4.52V or 0.389V-2.98V)

voices

GF1 voices limit (14-32)

pcm_voices

reserved PCM voices

This module supports multiple cards and autoprobe (without MPU-401 port).

Module snd-gusmax¶

Module for Gravis UltraSound MAX sound card.

port

port # for GF1 chip (0x220,0x230,0x240,0x250,0x260)

irq

IRQ # for GF1 chip (3,5,9,11,12,15)

dma1

DMA # for GF1 chip (1,3,5,6,7)

dma2

DMA # for GF1 chip (1,3,5,6,7,-1=disable)

joystick_dac

0 to 31, (0.59V-4.52V or 0.389V-2.98V)

voices

GF1 voices limit (14-32)

pcm_voices

reserved PCM voices

This module supports multiple cards and autoprobe.

Module snd-hda-intel¶

Module for Intel HD Audio (ICH6, ICH6M, ESB2, ICH7, ICH8, ICH9, ICH10,PCH, SCH), ATI SB450, SB600, R600, RS600, RS690, RS780, RV610, RV620,RV630, RV635, RV670, RV770, VIA VT8251/VT8237A, SIS966, ULI M5461

[Multiple options for each card instance]

model

force the model name

position_fix

Fix DMA pointer;-1 = system default: choose appropriate one per controller hardware,0 = auto: falls back to LPIB when POSBUF doesn’t work,1 = use LPIB,2 = POSBUF: use position buffer,3 = VIACOMBO: VIA-specific workaround for capture,4 = COMBO: use LPIB for playback, auto for capture stream5 = SKL+: apply the delay calculation available on recent Intel chips6 = FIFO: correct the position with the fixed FIFO size, for recent AMD chips

probe_mask

Bitmask to probe codecs (default = -1, meaning all slots);When the bit 8 (0x100) is set, the lower 8 bits are usedas the “fixed” codec slots; i.e. the driver probes theslots regardless what hardware reports back

probe_only

Only probing and no codec initialization (default=off);Useful to check the initial codec status for debugging

bdl_pos_adj

Specifies the DMA IRQ timing delay in samples.Passing -1 will make the driver to choose the appropriatevalue based on the controller chip.

patch

Specifies the early “patch” files to modify the HD-audio setupbefore initializing the codecs.This option is available only whenCONFIG_SND_HDA_PATCH_LOADER=yis set. SeeMore Notes on HD-Audio Driver for details.

beep_mode

Selects the beep registration mode (0=off, 1=on);default value is set viaCONFIG_SND_HDA_INPUT_BEEP_MODE kconfig.

[Single (global) options]

single_cmd

Use single immediate commands to communicate with codecs(for debugging only)

enable_msi

Enable Message Signaled Interrupt (MSI) (default = off)

power_save

Automatic power-saving timeout (in second, 0 = disable)

power_save_controller

Reset HD-audio controller in power-saving mode (default = on)

pm_blacklist

Enable / disable power-management deny-list (default = look up PMdeny-list, 0 = skip PM deny-list, 1 = force to turn off runtime PM)

align_buffer_size

Force rounding of buffer/period sizes to multiples of 128 bytes.This is more efficient in terms of memory access but isn’trequired by the HDA spec and prevents users from specifyingexact period/buffer sizes. (default = on)

snoop

Enable/disable snooping (default = on)

This module supports multiple cards and autoprobe.

SeeMore Notes on HD-Audio Driver for more details about HD-audio driver.

Each codec may have a model table for different configurations.If your machine isn’t listed there, the default (usually minimal)configuration is set up. You can passmodel=<name> option tospecify a certain model in such a case. There are differentmodels depending on the codec chip. The list of available modelsis found inHD-Audio Codec-Specific Models.

The model namegeneric is treated as a special case. When thismodel is given, the driver uses the generic codec parser without“codec-patch”. It’s sometimes good for testing and debugging.

The model option can be used also for aliasing to another PCI or codecSSID. When it’s passed in the form ofmodel=XXXX:YYYY where XXXXand YYYY are the sub-vendor and sub-device IDs in hex numbers,respectively, the driver will refer to that SSID as a reference to thequirk table.

If the default configuration doesn’t work and one of the abovematches with your device, report it together with alsa-info.shoutput (with--no-upload option) to kernel bugzilla or alsa-develML (see the sectionLinks and Addresses).

power_save andpower_save_controller options are for power-savingmode. See powersave.rst for details.

Note 2: If you get click noises on output, try the module optionposition_fix=1 or2.position_fix=1 will use the SD_LPIBregister value without FIFO size correction as the currentDMA pointer.position_fix=2 will make the driver to usethe position buffer instead of reading SD_LPIB register.(Usually SD_LPIB register is more accurate than theposition buffer.)

position_fix=3 is specific to VIA devices. The positionof the capture stream is checked from both LPIB and POSBUFvalues.position_fix=4 is a combination mode, using LPIBfor playback and POSBUF for capture.

NB: If you get manyazx_get_responsetimeout messages atloading, it’s likely a problem of interrupts (e.g. ACPI irqrouting). Try to boot with options likepci=noacpi. Also, youcan trysingle_cmd=1 module option. This will switch thecommunication method between HDA controller and codecs to thesingle immediate commands instead of CORB/RIRB. Basically, thesingle command mode is provided only for BIOS, and you won’t getunsolicited events, too. But, at least, this works independentlyfrom the irq. Remember this is a last resort, and should beavoided as much as possible...

MORE NOTES ONazx_get_responsetimeout PROBLEMS:On some hardware, you may need to add a proper probe_mask optionto avoid theazx_get_responsetimeout problem above, instead.This occurs when the access to non-existing or non-working codec slot(likely a modem one) causes a stall of the communication via HD-audiobus. You can see which codec slots are probed by enablingCONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codecproc files. Then limit the slots to probe by probe_mask option.For example,probe_mask=1 means to probe only the first slot, andprobe_mask=4 means only the third slot.

The power-management is supported.

Module snd-hdsp¶

Module for RME Hammerfall DSP audio interface(s)

This module supports multiple cards.

Note: The firmware data can be automatically loaded via hotplugwhenCONFIG_FW_LOADER is set. Otherwise, you need to loadthe firmware via hdsploader utility included in alsa-toolspackage.The firmware data is found in alsa-firmware package.

Note: snd-page-alloc module does the job which snd-hammerfall-memmodule did formerly. It will allocate the buffers in advancewhen any HDSP cards are found. To make the bufferallocation sure, load snd-page-alloc module in the earlystage of boot sequence. SeeEarly Buffer Allocationsection.

Module snd-hdspm¶

Module for RME HDSP MADI board.

precise_ptr

Enable precise pointer, or disable.

line_outs_monitor

Send playback streams to analog outs by default.

enable_monitor

Enable Analog Out on Channel 63/64 by default.

See hdspm.rst for details.

Module snd-ice1712¶

Module for Envy24 (ICE1712) based PCI sound cards.

• MidiMan M Audio Delta 1010

• MidiMan M Audio Delta 1010LT

• MidiMan M Audio Delta DiO 2496

• MidiMan M Audio Delta 66

• MidiMan M Audio Delta 44

• MidiMan M Audio Delta 410

• MidiMan M Audio Audiophile 2496

• TerraTec EWS 88MT

• TerraTec EWS 88D

• TerraTec EWX 24/96

• TerraTec DMX 6Fire

• TerraTec Phase 88

• Hoontech SoundTrack DSP 24

• Hoontech SoundTrack DSP 24 Value

• Hoontech SoundTrack DSP 24 Media 7.1

• Event Electronics, EZ8

• Digigram VX442

• Lionstracs, Mediastaton

• Terrasoniq TS 88

model

Use the given board model, one of the following:delta1010, dio2496, delta66, delta44, audiophile, delta410,delta1010lt, vx442, ewx2496, ews88mt, ews88mt_new, ews88d,dmx6fire, dsp24, dsp24_value, dsp24_71, ez8,phase88, mediastation

omni

Omni I/O support for MidiMan M-Audio Delta44/66

cs8427_timeout

reset timeout for the CS8427 chip (S/PDIF transceiver) in msecresolution, default value is 500 (0.5 sec)

This module supports multiple cards and autoprobe.Note: The consumer part is not used with all Envy24 based cards (forexample in the MidiMan Delta siree).

Note: The supported board is detected by reading EEPROM or PCISSID (if EEPROM isn’t available). You can override themodel by passingmodel module option in case that thedriver isn’t configured properly or you want to try anothertype for testing.

Module snd-ice1724¶

Module for Envy24HT (VT/ICE1724), Envy24PT (VT1720) based PCI sound cards.

• MidiMan M Audio Revolution 5.1

• MidiMan M Audio Revolution 7.1

• MidiMan M Audio Audiophile 192

• AMP Ltd AUDIO2000

• TerraTec Aureon 5.1 Sky

• TerraTec Aureon 7.1 Space

• TerraTec Aureon 7.1 Universe

• TerraTec Phase 22

• TerraTec Phase 28

• AudioTrak Prodigy 7.1

• AudioTrak Prodigy 7.1 LT

• AudioTrak Prodigy 7.1 XT

• AudioTrak Prodigy 7.1 HIFI

• AudioTrak Prodigy 7.1 HD2

• AudioTrak Prodigy 192

• Pontis MS300

• Albatron K8X800 Pro II

• Chaintech ZNF3-150

• Chaintech ZNF3-250

• Chaintech 9CJS

• Chaintech AV-710

• Shuttle SN25P

• Onkyo SE-90PCI

• Onkyo SE-200PCI

• ESI Juli@

• ESI Maya44

• Hercules Fortissimo IV

• EGO-SYS WaveTerminal 192M

model

Use the given board model, one of the following:revo51, revo71, amp2000, prodigy71, prodigy71lt,prodigy71xt, prodigy71hifi, prodigyhd2, prodigy192,juli, aureon51, aureon71, universe, ap192, k8x800,phase22, phase28, ms300, av710, se200pci, se90pci,fortissimo4, sn25p, WT192M, maya44

This module supports multiple cards and autoprobe.

Note: The supported board is detected by reading EEPROM or PCISSID (if EEPROM isn’t available). You can override themodel by passingmodel module option in case that thedriver isn’t configured properly or you want to try anothertype for testing.

Module snd-indigo¶

Module for Echoaudio Indigo

This module supports multiple cards.The driver requires the firmware loader support on kernel.

Module snd-indigodj¶

Module for Echoaudio Indigo DJ

This module supports multiple cards.The driver requires the firmware loader support on kernel.

Module snd-indigoio¶

Module for Echoaudio Indigo IO

This module supports multiple cards.The driver requires the firmware loader support on kernel.

Module snd-intel8x0¶

Module for AC’97 motherboards from Intel and compatibles.

• Intel i810/810E, i815, i820, i830, i84x, MX440 ICH5, ICH6, ICH7,6300ESB, ESB2

• SiS 7012 (SiS 735)

• NVidia NForce, NForce2, NForce3, MCP04, CK804 CK8, CK8S, MCP501

• AMD AMD768, AMD8111

• ALi m5455

ac97_clock

AC’97 codec clock base (0 = auto-detect)

ac97_quirk

AC’97 workaround for strange hardware;SeeAC97 Quirk Option section below.

buggy_irq

Enable workaround for buggy interrupts on some motherboards(default yes on nForce chips, otherwise off)

buggy_semaphore

Enable workaround for hardware with buggy semaphores (e.g. on someASUS laptops) (default off)

spdif_aclink

Use S/PDIF over AC-link instead of direct connection from thecontroller chip (0 = off, 1 = on, -1 = default)

This module supports one chip and autoprobe.

Note: the latest driver supports auto-detection of chip clock.if you still encounter too fast playback, specify the clockexplicitly via the module optionac97_clock=41194.

Joystick/MIDI ports are not supported by this driver. If yourmotherboard has these devices, use the ns558 or snd-mpu401modules, respectively.

The power-management is supported.

Module snd-intel8x0m¶

Module for Intel ICH (i8x0) chipset MC97 modems.

• Intel i810/810E, i815, i820, i830, i84x, MX440 ICH5, ICH6, ICH7

• SiS 7013 (SiS 735)

• NVidia NForce, NForce2, NForce2s, NForce3

• AMD AMD8111

• ALi m5455

ac97_clock

AC’97 codec clock base (0 = auto-detect)

This module supports one card and autoprobe.

Note: The default index value of this module is -2, i.e. the firstslot is excluded.

The power-management is supported.

Module snd-interwave¶

Module for Gravis UltraSound PnP, Dynasonic 3-D/Pro, STB Sound Rage 32and other sound cards based on AMD InterWave (tm) chip.

joystick_dac

0 to 31, (0.59V-4.52V or 0.389V-2.98V)

midi

1 = MIDI UART enable, 0 = MIDI UART disable (default)

pcm_voices

reserved PCM voices for the synthesizer (default 2)

effect

1 = InterWave effects enable (default 0); requires 8 voices

isapnp

ISA PnP detection - 0 = disable, 1 = enable (default)

withisapnp=0, the following options are available:

port

port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)

irq

IRQ # for InterWave chip (3,5,9,11,12,15)

dma1

DMA # for InterWave chip (0,1,3,5,6,7)

dma2

DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)

This module supports multiple cards, autoprobe and ISA PnP.

Module snd-interwave-stb¶

Module for UltraSound 32-Pro (sound card from STB used by Compaq)and other sound cards based on AMD InterWave (tm) chip with TEA6330Tcircuit for extended control of bass, treble and master volume.

joystick_dac

0 to 31, (0.59V-4.52V or 0.389V-2.98V)

midi

1 = MIDI UART enable, 0 = MIDI UART disable (default)

pcm_voices

reserved PCM voices for the synthesizer (default 2)

effect

1 = InterWave effects enable (default 0); requires 8 voices

isapnp

ISA PnP detection - 0 = disable, 1 = enable (default)

withisapnp=0, the following options are available:

port

port # for InterWave chip (0x210,0x220,0x230,0x240,0x250,0x260)

port_tc

tone control (i2c bus) port # for TEA6330T chip (0x350,0x360,0x370,0x380)

irq

IRQ # for InterWave chip (3,5,9,11,12,15)

dma1

DMA # for InterWave chip (0,1,3,5,6,7)

dma2

DMA # for InterWave chip (0,1,3,5,6,7,-1=disable)

This module supports multiple cards, autoprobe and ISA PnP.

Module snd-jazz16¶

Module for Media Vision Jazz16 chipset. The chipset consists of 3 chips:MVD1216 + MVA416 + MVA514.

port

port # for SB DSP chip (0x210,0x220,0x230,0x240,0x250,0x260)

irq

IRQ # for SB DSP chip (3,5,7,9,10,15)

dma8

DMA # for SB DSP chip (1,3)

dma16

DMA # for SB DSP chip (5,7)

mpu_port

MPU-401 port # (0x300,0x310,0x320,0x330)

mpu_irq

MPU-401 irq # (2,3,5,7)

This module supports multiple cards.

Module snd-korg1212¶

Module for Korg 1212 IO PCI card

This module supports multiple cards.

Module snd-layla20¶

Module for Echoaudio Layla20

This module supports multiple cards.The driver requires the firmware loader support on kernel.

Module snd-layla24¶

Module for Echoaudio Layla24

This module supports multiple cards.The driver requires the firmware loader support on kernel.

Module snd-lola¶

Module for Digigram Lola PCI-e boards

This module supports multiple cards.

Module snd-lx6464es¶

Module for Digigram LX6464ES boards

This module supports multiple cards.

Module snd-maestro3¶

Module for Allegro/Maestro3 chips

external_amp

enable external amp (enabled by default)

amp_gpio

GPIO pin number for external amp (0-15) or -1 for default pin (8for allegro, 1 for others)

This module supports autoprobe and multiple chips.

Note: the binding of amplifier is dependent on hardware.If there is no sound even though all channels are unmuted, try tospecify other gpio connection via amp_gpio option.For example, a Panasonic notebook might needamp_gpio=0x0doption.

The power-management is supported.

Module snd-mia¶

Module for Echoaudio Mia

This module supports multiple cards.The driver requires the firmware loader support on kernel.

Module snd-miro¶

Module for Miro soundcards: miroSOUND PCM 1 pro, miroSOUND PCM 12,miroSOUND PCM 20 Radio.

port

Port # (0x530,0x604,0xe80,0xf40)

irq

IRQ # (5,7,9,10,11)

dma1

1st dma # (0,1,3)

dma2

2nd dma # (0,1)

mpu_port

MPU-401 port # (0x300,0x310,0x320,0x330)

mpu_irq

MPU-401 irq # (5,7,9,10)

fm_port

FM Port # (0x388)

wss

enable WSS mode

ide

enable onboard ide support

Module snd-mixart¶

Module for Digigram miXart8 sound cards.

This module supports multiple cards.Note: One miXart8 board will be represented as 4 alsa cards.SeeAlsa driver for Digigram miXart8 and miXart8AES/EBU soundcards for details.

When the driver is compiled as a module and the hotplug firmwareis supported, the firmware data is loaded via hotplug automatically.Install the necessary firmware files in alsa-firmware package.When no hotplug fw loader is available, you need to load thefirmware via mixartloader utility in alsa-tools package.

Module snd-mona¶

Module for Echoaudio Mona

This module supports multiple cards.The driver requires the firmware loader support on kernel.

Module snd-mpu401¶

Module for MPU-401 UART devices.

port

port number or -1 (disable)

irq

IRQ number or -1 (disable)

pnp

PnP detection - 0 = disable, 1 = enable (default)

This module supports multiple devices and PnP.

Module snd-msnd-classic¶

Module for Turtle Beach MultiSound Classic, Tahiti or Montereysoundcards.

io

Port # for msnd-classic card

irq

IRQ # for msnd-classic card

mem

Memory address (0xb0000, 0xc8000, 0xd0000, 0xd8000, 0xe0000 or 0xe8000)

write_ndelay

enable write ndelay (default = 1)

calibrate_signal

calibrate signal (default = 0)

isapnp

ISA PnP detection - 0 = disable, 1 = enable (default)

digital

Digital daughterboard present (default = 0)

cfg

Config port (0x250, 0x260 or 0x270) default = PnP

reset

Reset all devices

mpu_io

MPU401 I/O port

mpu_irq

MPU401 irq#

ide_io0

IDE port #0

ide_io1

IDE port #1

ide_irq

IDE irq#

joystick_io

Joystick I/O port

The driver requires firmware filesturtlebeach/msndinit.bin andturtlebeach/msndperm.bin in the proper firmware directory.

See Documentation/sound/cards/multisound.sh for important informationabout this driver. Note that it has been discontinued, but theVoyetra Turtle Beach knowledge base entry for it is still availableathttps://www.turtlebeach.com

Module snd-msnd-pinnacle¶

Module for Turtle Beach MultiSound Pinnacle/Fiji soundcards.

io

Port # for pinnacle/fiji card

irq

IRQ # for pinnalce/fiji card

mem

Memory address (0xb0000, 0xc8000, 0xd0000, 0xd8000, 0xe0000 or 0xe8000)

write_ndelay

enable write ndelay (default = 1)

calibrate_signal

calibrate signal (default = 0)

isapnp

ISA PnP detection - 0 = disable, 1 = enable (default)

The driver requires firmware filesturtlebeach/pndspini.bin andturtlebeach/pndsperm.bin in the proper firmware directory.

Module snd-mtpav¶

Module for MOTU MidiTimePiece AV multiport MIDI (on the parallelport).

port

I/O port # for MTPAV (0x378,0x278, default=0x378)

irq

IRQ # for MTPAV (7,5, default=7)

hwports

number of supported hardware ports, default=8.

Module supports only 1 card. This module has no enable option.

Module snd-mts64¶

Module for Ego Systems (ESI) Miditerminal 4140

This module supports multiple devices.Requires parport (CONFIG_PARPORT).

Module snd-nm256¶

Module for NeoMagic NM256AV/ZX chips

playback_bufsize

max playback frame size in kB (4-128kB)

capture_bufsize

max capture frame size in kB (4-128kB)

force_ac97

0 or 1 (disabled by default)

buffer_top

specify buffer top address

use_cache

0 or 1 (disabled by default)

vaio_hack

alias buffer_top=0x25a800

reset_workaround

enable AC97 RESET workaround for some laptops

reset_workaround2

enable extended AC97 RESET workaround for some other laptops

This module supports one chip and autoprobe.

The power-management is supported.

Note: on some notebooks the buffer address cannot be detectedautomatically, or causes hang-up during initialization.In such a case, specify the buffer top address explicitly viathe buffer_top option.For example,Sony F250: buffer_top=0x25a800Sony F270: buffer_top=0x272800The driver supports only ac97 codec. It’s possible to forceto initialize/use ac97 although it’s not detected. In such acase, useforce_ac97=1 option - butNO guarantee whether itworks!

Note: The NM256 chip can be linked internally with non-AC97codecs. This driver supports only the AC97 codec, and won’t workwith machines with other (most likely CS423x or OPL3SAx) chips,even though the device is detected in lspci. In such a case, tryother drivers, e.g. snd-cs4232 or snd-opl3sa2. Some has ISA-PnPbut some doesn’t have ISA PnP. You’ll need to specifyisapnp=0and proper hardware parameters in the case without ISA PnP.

Note: some laptops need a workaround for AC97 RESET. For theknown hardware like Dell Latitude LS and Sony PCG-F305, thisworkaround is enabled automatically. For other laptops with ahard freeze, you can tryreset_workaround=1 option.

Note: Dell Latitude CSx laptops have another problem regardingAC97 RESET. On these laptops, reset_workaround2 option isturned on as default. This option is worth to try if theprevious reset_workaround option doesn’t help.

Note: This driver is really crappy. It’s a porting from theOSS driver, which is a result of black-magic reverse engineering.The detection of codec will fail if the driver is loadedafterX-server as described above. You might be able to force to loadthe module, but it may result in hang-up. Hence, make sure thatyou load this modulebefore X if you encounter this kind ofproblem.

Module snd-opl3sa2¶

Module for Yamaha OPL3-SA2/SA3 sound cards.

isapnp

ISA PnP detection - 0 = disable, 1 = enable (default)

withisapnp=0, the following options are available:

port

control port # for OPL3-SA chip (0x370)

sb_port

SB port # for OPL3-SA chip (0x220,0x240)

wss_port

WSS port # for OPL3-SA chip (0x530,0xe80,0xf40,0x604)

midi_port

port # for MPU-401 UART (0x300,0x330), -1 = disable

fm_port

FM port # for OPL3-SA chip (0x388), -1 = disable

irq

IRQ # for OPL3-SA chip (5,7,9,10)

dma1

first DMA # for Yamaha OPL3-SA chip (0,1,3)

dma2

second DMA # for Yamaha OPL3-SA chip (0,1,3), -1 = disable

This module supports multiple cards and ISA PnP. It does not supportautoprobe (if ISA PnP is not used) thus all ports must be specified!!!

The power-management is supported.

Module snd-opti92x-ad1848¶

Module for sound cards based on OPTi 82c92x and Analog Devices AD1848 chips.Module works with OAK Mozart cards as well.

isapnp

ISA PnP detection - 0 = disable, 1 = enable (default)

withisapnp=0, the following options are available:

port

port # for WSS chip (0x530,0xe80,0xf40,0x604)

mpu_port

port # for MPU-401 UART (0x300,0x310,0x320,0x330)

fm_port

port # for OPL3 device (0x388)

irq

IRQ # for WSS chip (5,7,9,10,11)

mpu_irq

IRQ # for MPU-401 UART (5,7,9,10)

dma1

first DMA # for WSS chip (0,1,3)

This module supports only one card, autoprobe and PnP.

Module snd-opti92x-cs4231¶

Module for sound cards based on OPTi 82c92x and Crystal CS4231 chips.

isapnp

ISA PnP detection - 0 = disable, 1 = enable (default)

withisapnp=0, the following options are available:

port

port # for WSS chip (0x530,0xe80,0xf40,0x604)

mpu_port

port # for MPU-401 UART (0x300,0x310,0x320,0x330)

fm_port

port # for OPL3 device (0x388)

irq

IRQ # for WSS chip (5,7,9,10,11)

mpu_irq

IRQ # for MPU-401 UART (5,7,9,10)

dma1

first DMA # for WSS chip (0,1,3)

dma2

second DMA # for WSS chip (0,1,3)

This module supports only one card, autoprobe and PnP.

Module snd-opti93x¶

Module for sound cards based on OPTi 82c93x chips.

isapnp

ISA PnP detection - 0 = disable, 1 = enable (default)

withisapnp=0, the following options are available:

port

port # for WSS chip (0x530,0xe80,0xf40,0x604)

mpu_port

port # for MPU-401 UART (0x300,0x310,0x320,0x330)

fm_port

port # for OPL3 device (0x388)

irq

IRQ # for WSS chip (5,7,9,10,11)

mpu_irq

IRQ # for MPU-401 UART (5,7,9,10)

dma1

first DMA # for WSS chip (0,1,3)

dma2

second DMA # for WSS chip (0,1,3)

This module supports only one card, autoprobe and PnP.

Module snd-oxygen¶

Module for sound cards based on the C-Media CMI8786/8787/8788 chip:

• Asound A-8788

• Asus Xonar DG/DGX

• AuzenTech X-Meridian

• AuzenTech X-Meridian 2G

• Bgears b-Enspirer

• Club3D Theatron DTS

• HT-Omega Claro (plus)

• HT-Omega Claro halo (XT)

• Kuroutoshikou CMI8787-HG2PCI

• Razer Barracuda AC-1

• Sondigo Inferno

• TempoTec HiFier Fantasia

• TempoTec HiFier Serenade

This module supports autoprobe and multiple cards.

Module snd-pcsp¶

Module for internal PC-Speaker.

nopcm

Disable PC-Speaker PCM sound. Only beeps remain.

nforce_wa

enable NForce chipset workaround. Expect bad sound.

This module supports system beeps, some kind of PCM playback andeven a few mixer controls.

Module snd-pcxhr¶

Module for Digigram PCXHR boards

This module supports multiple cards.

Module snd-portman2x4¶

Module for Midiman Portman 2x4 parallel port MIDI interface

This module supports multiple cards.

Module snd-powermac (on ppc only)¶

Module for PowerMac, iMac and iBook on-board soundchips

enable_beep

enable beep using PCM (enabled as default)

Module supports autoprobe a chip.

Note: the driver may have problems regarding endianness.

The power-management is supported.

Module snd-pxa2xx-ac97 (on arm only)¶

Module for AC97 driver for the Intel PXA2xx chip

For ARM architecture only.

The power-management is supported.

Module snd-riptide¶

Module for Conexant Riptide chip

joystick_port

Joystick port # (default: 0x200)

mpu_port

MPU401 port # (default: 0x330)

opl3_port

OPL3 port # (default: 0x388)

This module supports multiple cards.The driver requires the firmware loader support on kernel.You need to install the firmware fileriptide.hex to the standardfirmware path (e.g. /lib/firmware).

Module snd-rme32¶

Module for RME Digi32, Digi32 Pro and Digi32/8 (Sek’d Prodif32,Prodif96 and Prodif Gold) sound cards.

This module supports multiple cards.

Module snd-rme96¶

Module for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST sound cards.

This module supports multiple cards.

Module snd-rme9652¶

Module for RME Digi9652 (Hammerfall, Hammerfall-Light) sound cards.

precise_ptr

Enable precise pointer (doesn’t work reliably). (default = 0)

This module supports multiple cards.

Note: snd-page-alloc module does the job which snd-hammerfall-memmodule did formerly. It will allocate the buffers in advancewhen any RME9652 cards are found. To make the bufferallocation sure, load snd-page-alloc module in the earlystage of boot sequence. SeeEarly Buffer Allocationsection.

Module snd-sa11xx-uda1341 (on arm only)¶

Module for Philips UDA1341TS on Compaq iPAQ H3600 sound card.

Module supports only one card.Module has no enable and index options.

The power-management is supported.

Module snd-sb8¶

Module for 8-bit SoundBlaster cards: SoundBlaster 1.0, SoundBlaster 2.0,SoundBlaster Pro

port

port # for SB DSP chip (0x220,0x240,0x260)

irq

IRQ # for SB DSP chip (5,7,9,10)

dma8

DMA # for SB DSP chip (1,3)

This module supports multiple cards and autoprobe.

The power-management is supported.

Module snd-sb16 and snd-sbawe¶

Module for 16-bit SoundBlaster cards: SoundBlaster 16 (PnP),SoundBlaster AWE 32 (PnP), SoundBlaster AWE 64 PnP

mic_agc

Mic Auto-Gain-Control - 0 = disable, 1 = enable (default)

csp

ASP/CSP chip support - 0 = disable (default), 1 = enable

isapnp

ISA PnP detection - 0 = disable, 1 = enable (default)

with isapnp=0, the following options are available:

port

port # for SB DSP 4.x chip (0x220,0x240,0x260)

mpu_port

port # for MPU-401 UART (0x300,0x330), -1 = disable

awe_port

base port # for EMU8000 synthesizer (0x620,0x640,0x660) (snd-sbawemodule only)

irq

IRQ # for SB DSP 4.x chip (5,7,9,10)

dma8

8-bit DMA # for SB DSP 4.x chip (0,1,3)

dma16

16-bit DMA # for SB DSP 4.x chip (5,6,7)

This module supports multiple cards, autoprobe and ISA PnP.

Note: To use Vibra16X cards in 16-bit half duplex mode, you mustdisable 16bit DMA with dma16 = -1 module parameter.Also, all Sound Blaster 16 type cards can operate in 16-bithalf duplex mode through 8-bit DMA channel by disabling their16-bit DMA channel.

The power-management is supported.

Module snd-sc6000¶

Module for Gallant SC-6000 soundcard and later models: SC-6600 andSC-7000.

port

Port # (0x220 or 0x240)

mss_port

MSS Port # (0x530 or 0xe80)

irq

IRQ # (5,7,9,10,11)

mpu_irq

MPU-401 IRQ # (5,7,9,10) ,0 - no MPU-401 irq

dma

DMA # (1,3,0)

joystick

Enable gameport - 0 = disable (default), 1 = enable

This module supports multiple cards.

This card is also known as Audio Excel DSP 16 or Zoltrix AV302.

Module snd-sscape¶

Module for ENSONIQ SoundScape cards.

port

Port # (PnP setup)

wss_port

WSS Port # (PnP setup)

irq

IRQ # (PnP setup)

mpu_irq

MPU-401 IRQ # (PnP setup)

dma

DMA # (PnP setup)

dma2

2nd DMA # (PnP setup, -1 to disable)

joystick

Enable gameport - 0 = disable (default), 1 = enable

This module supports multiple cards.

The driver requires the firmware loader support on kernel.

Module snd-sun-amd7930 (on sparc only)¶

Module for AMD7930 sound chips found on Sparcs.

This module supports multiple cards.

Module snd-sun-cs4231 (on sparc only)¶

Module for CS4231 sound chips found on Sparcs.

This module supports multiple cards.

Module snd-sun-dbri (on sparc only)¶

Module for DBRI sound chips found on Sparcs.

This module supports multiple cards.

Module snd-wavefront¶

Module for Turtle Beach Maui, Tropez and Tropez+ sound cards.

use_cs4232_midi

Use CS4232 MPU-401 interface(inaccessibly located inside your computer)

isapnp

ISA PnP detection - 0 = disable, 1 = enable (default)

with isapnp=0, the following options are available:

cs4232_pcm_port

Port # for CS4232 PCM interface.

cs4232_pcm_irq

IRQ # for CS4232 PCM interface (5,7,9,11,12,15).

cs4232_mpu_port

Port # for CS4232 MPU-401 interface.

cs4232_mpu_irq

IRQ # for CS4232 MPU-401 interface (9,11,12,15).

ics2115_port

Port # for ICS2115

ics2115_irq

IRQ # for ICS2115

fm_port

FM OPL-3 Port #

dma1

DMA1 # for CS4232 PCM interface.

dma2

DMA2 # for CS4232 PCM interface.

The below are options for wavefront_synth features:

wf_raw

Assume that we need to boot the OS (default:no);If yes, then during driver loading, the state of the board isignored, and we reset the board and load the firmware anyway.

fx_raw

Assume that the FX process needs help (default:yes);If false, we’ll leave the FX processor in whatever state it iswhen the driver is loaded. The default is to download themicroprogram and associated coefficients to set it up for“default” operation, whatever that means.

debug_default

Debug parameters for card initialization

wait_usecs

How long to wait without sleeping, usecs (default:150);This magic number seems to give pretty optimal throughputbased on my limited experimentation.If you want to play around with it and find a better value, bemy guest. Remember, the idea is to get a number that causes usto just busy wait for as many WaveFront commands as possible,without coming up with a number so large that we hog the wholeCPU.Specifically, with this number, out of about 134,000 statuswaits, only about 250 result in a sleep.

sleep_interval

How long to sleep when waiting for reply (default: 100)

sleep_tries

How many times to try sleeping during a wait (default: 50)

ospath

Pathname to processed ICS2115 OS firmware (default:wavefront.os);The path name of the ISC2115 OS firmware. In the recentversion, it’s handled via firmware loader framework, so itmust be installed in the proper path, typically,/lib/firmware.

reset_time

How long to wait for a reset to take effect (default:2)

ramcheck_time

How many seconds to wait for the RAM test (default:20)

osrun_time

How many seconds to wait for the ICS2115 OS (default:10)

This module supports multiple cards and ISA PnP.

Note: the firmware filewavefront.os was located in the earlierversion in /etc. Now it’s loaded via firmware loader, andmust be in the proper firmware path, such as /lib/firmware.Copy (or symlink) the file appropriately if you get an errorregarding firmware downloading after upgrading the kernel.

Module snd-sonicvibes¶

Module for S3 SonicVibes PCI sound cards.* PINE Schubert 32 PCI

reverb

Reverb Enable - 1 = enable, 0 = disable (default);SoundCard must have onboard SRAM for this.

mge

Mic Gain Enable - 1 = enable, 0 = disable (default)

This module supports multiple cards and autoprobe.

Module snd-serial-u16550¶

Module for UART16550A serial MIDI ports.

port

port # for UART16550A chip

irq

IRQ # for UART16550A chip, -1 = poll mode

speed

speed in bauds (9600,19200,38400,57600,115200)38400 = default

base

base for divisor in bauds (57600,115200,230400,460800)115200 = default

outs

number of MIDI ports in a serial port (1-4)1 = default

adaptor

Type of adaptor.

0 = Soundcanvas, 1 = MS-124T, 2 = MS-124W S/A,3 = MS-124W M/B, 4 = Generic

This module supports multiple cards. This module does not support autoprobethus the main port must be specified!!! Other options are optional.

Module snd-trident¶

Module for Trident 4DWave DX/NX sound cards.* Best Union Miss Melody 4DWave PCI* HIS 4DWave PCI* Warpspeed ONSpeed 4DWave PCI* AzTech PCI 64-Q3D* Addonics SV 750* CHIC True Sound 4Dwave* Shark Predator4D-PCI* Jaton SonicWave 4D* SiS SI7018 PCI Audio* Hoontech SoundTrack Digital 4DWave NX

pcm_channels

max channels (voices) reserved for PCM

wavetable_size

max wavetable size in kB (4-?kb)

This module supports multiple cards and autoprobe.

The power-management is supported.

Module snd-ua101¶

Module for the Edirol UA-101/UA-1000 audio/MIDI interfaces.

This module supports multiple devices, autoprobe and hotplugging.

Module snd-usb-audio¶

Module for USB audio and USB MIDI devices.

vid

Vendor ID for the device (optional)

pid

Product ID for the device (optional)

nrpacks

Max. number of packets per URB (default: 8)

device_setup

Device specific magic number (optional);Influence depends on the deviceDefault: 0x0000

ignore_ctl_error

Ignore any USB-controller regarding mixer interface (default: no)ignore_ctl_error=1 may help when you get an error at accessingthe mixer element such as URB error -22. This happens on somebuggy USB device or the controller. This workaround corresponds tothequirk_flags bit 14, too.

autoclock

Enable auto-clock selection for UAC2 devices (default: yes)

lowlatency

Enable low latency playback mode (default: yes).Could disable it to switch back to the old mode if face a regression.

quirk_alias

Quirk alias list, pass strings like0123abcd:5678beef, whichapplies the existing quirk for the device 5678:beef to a newdevice 0123:abcd.

implicit_fb

Apply the generic implicit feedback sync mode. When this is setand the playback stream sync mode is ASYNC, the driver tries totie an adjacent ASYNC capture stream as the implicit feedbacksource. This is equivalent with quirk_flags bit 17.

use_vmalloc

Usevmalloc() for allocations of the PCM buffers (default: yes).For architectures with non-coherent memory like ARM or MIPS, themmap access may give inconsistent results with vmalloc’edbuffers. If mmap is used on such architectures, turn off thisoption, so that the DMA-coherent buffers are allocated and usedinstead.

delayed_register

The option is needed for devices that have multiple streamsdefined in multiple USB interfaces. The driver may invokeregistrations multiple times (once per interface) and this maylead to the insufficient device enumeration.This option receives an array of strings, and you can passID:INTERFACE like0123abcd:4 for performing the delayedregistration to the given device. In this example, when a USBdevice 0123:abcd is probed, the driver waits the registrationuntil the USB interface 4 gets probed.The driver prints a message like “Found post-registration deviceassignment: 1234abcd:04” for such a device, so that user cannotice the need.

skip_validation

Skip unit descriptor validation (default: no).The option is used to ignore the validation errors with the hexdumpof the unit descriptor instead of a driver probe error, so that wecan check its details.

quirk_flags

The option provides a refined and flexible control for applying quirkflags. It allows to specify the quirk flags for each device, and canbe modified dynamically via sysfs.The old usage accepts an array of integers, each of which applies quirkflags on the device in the order of probing.E.g.,quirk_flags=0x01,0x02 applies get_sample_rate to the firstdevice, and share_media_device to the second device.The new usage accepts a string in the format ofVID1:PID1:FLAGS1;VID2:PID2:FLAGS2;..., whereVIDx andPIDxspecify the device, andFLAGSx specify the flags to be applied.VIDx andPIDx are 4-digit hexadecimal numbers, and can bespecified as* to match any value.FLAGSx can be a set offlags given by name, separated by|, or a hexadecimal numberrepresenting the bit flags. The available flag names are listed below.An exclamation mark can be prefixed to a flag name to negate the flag.For example,1234:abcd:mixer_playback_min_mute|!ignore_ctl_error;*:*:0x01;applies themixer_playback_min_mute flag and clears theignore_ctl_error flag for the device 1234:abcd, and applies theskip_sample_rate flag for all devices.

• bit 0:get_sample_rateSkip reading sample rate for devices

• bit 1:share_media_deviceCreate Media Controller API entries

• bit 2:align_transferAllow alignment on audio sub-slot at transfer

• bit 3:tx_lengthAdd length specifier to transfers

• bit 4:playback_firstStart playback stream at first in implement feedback mode

• bit 5:skip_clock_selectorSkip clock selector setup

• bit 6:ignore_clock_sourceIgnore errors from clock source search

• bit 7:itf_usb_dsd_dacIndicates ITF-USB DSD-based DACs

• bit 8:ctl_msg_delayAdd a delay of 20ms at each control message handling

• bit 9:ctl_msg_delay_1mAdd a delay of 1-2ms at each control message handling

• bit 10:ctl_msg_delay_5mAdd a delay of 5-6ms at each control message handling

• bit 11:iface_delayAdd a delay of 50ms at each interface setup

• bit 12:validate_ratesPerform sample rate validations at probe

• bit 13:disable_autosuspendDisable runtime PM autosuspend

• bit 14:ignore_ctl_errorIgnore errors for mixer access

• bit 15:dsd_rawSupport generic DSD raw U32_BE format

• bit 16:set_iface_firstSet up the interface at first like UAC1

• bit 17:generic_implicit_fbApply the generic implicit feedback sync mode

• bit 18:skip_implicit_fbDon’t apply implicit feedback sync mode

• bit 19:iface_skip_closeDon’t close interface during setting sample rate

• bit 20:force_iface_resetForce an interface reset whenever stopping & restarting a stream

• bit 21:fixed_rateDo not set PCM rate (frequency) when only one rate is availablefor the given endpoint

• bit 22:mic_res_16Set the fixed resolution 16 for Mic Capture Volume

• bit 23:mic_res_384Set the fixed resolution 384 for Mic Capture Volume

• bit 24:mixer_playback_min_muteSet minimum volume control value as mute for devices where thelowest playback value represents muted state instead of minimumaudible volume

• bit 25:mixer_capture_min_muteSimilar to bit 24 but for capture streams

This module supports multiple devices, autoprobe and hotplugging.

NB:nrpacks parameter can be modified dynamically via sysfs.Don’t put the value over 20. Changing via sysfs has no sanitycheck.

NB:ignore_ctl_error=1 just provides a quick way to work around theissues. If you have a buggy device that requires these quirks, pleasereport it to the upstream.

NB:quirk_alias option is provided only for testing / development.If you want to have a proper support, contact to upstream foradding the matching quirk in the driver code statically.Ditto forquirk_flags. If a device is known to require specificworkarounds, please report to the upstream.

Module snd-usb-caiaq¶

Module for caiaq UB audio interfaces,

• Native Instruments RigKontrol2

• Native Instruments Kore Controller

• Native Instruments Audio Kontrol 1

• Native Instruments Audio 8 DJ

This module supports multiple devices, autoprobe and hotplugging.

Module snd-usb-usx2y¶

Module for Tascam USB US-122, US-224 and US-428 devices.

This module supports multiple devices, autoprobe and hotplugging.

Note: you need to load the firmware viausx2yloader utility includedin alsa-tools and alsa-firmware packages.

Module snd-via82xx¶

Module for AC’97 motherboards based on VIA 82C686A/686B, 8233, 8233A,8233C, 8235, 8237 (south) bridge.

mpu_port

0x300,0x310,0x320,0x330, otherwise obtain BIOS setup[VIA686A/686B only]

joystick

Enable joystick (default off) [VIA686A/686B only]

ac97_clock

AC’97 codec clock base (default 48000Hz)

dxs_support

support DXS channels, 0 = auto (default), 1 = enable, 2 = disable,3 = 48k only, 4 = no VRA, 5 = enable any sample rate and differentsample rates on different channels [VIA8233/C, 8235, 8237 only]

ac97_quirk

AC’97 workaround for strange hardware;SeeAC97 Quirk Option section below.

This module supports one chip and autoprobe.

Note: on some SMP motherboards like MSI 694D the interrupts mightnot be generated properly. In such a case, please try toset the SMP (or MPS) version on BIOS to 1.1 instead ofdefault value 1.4. Then the interrupt number will beassigned under 15. You might also upgrade your BIOS.

Note: VIA8233/5/7 (not VIA8233A) can support DXS (direct sound)channels as the first PCM. On these channels, up to 4streams can be played at the same time, and the controllercan perform sample rate conversion with separate rates foreach channel.As default (dxs_support=0), 48k fixed rate is chosenexcept for the known devices since the output is oftennoisy except for 48k on some mother boards due to thebug of BIOS.Please try oncedxs_support=5 and if it works on othersample rates (e.g. 44.1kHz of mp3 playback), please let usknow the PCI subsystem vendor/device id’s (output oflspci-nv).Ifdxs_support=5 does not work, trydxs_support=4; if itdoesn’t work too, try dxs_support=1. (dxs_support=1 isusually for old motherboards. The correct implementedboard should work with 4 or 5.) If it still doesn’twork and the default setting is ok,dxs_support=3 is theright choice. If the default setting doesn’t work at all,trydxs_support=2 to disable the DXS channels.In any cases, please let us know the result and thesubsystem vendor/device ids. SeeLinks and Addressesbelow.

Note: for the MPU401 on VIA823x, use snd-mpu401 driveradditionally. The mpu_port option is for VIA686 chips only.

The power-management is supported.

Module snd-via82xx-modem¶

Module for VIA82xx AC97 modem

ac97_clock

AC’97 codec clock base (default 48000Hz)

This module supports one card and autoprobe.

Note: The default index value of this module is -2, i.e. the firstslot is excluded.

The power-management is supported.

Module snd-virmidi¶

Module for virtual rawmidi devices.This module creates virtual rawmidi devices which communicateto the corresponding ALSA sequencer ports.

midi_devs

MIDI devices # (1-4, default=4)

This module supports multiple cards.

Module snd-virtuoso¶

Module for sound cards based on the Asus AV66/AV100/AV200 chips,i.e., Xonar D1, DX, D2, D2X, DS, DSX, Essence ST (Deluxe),Essence STX (II), HDAV1.3 (Deluxe), and HDAV1.3 Slim.

This module supports autoprobe and multiple cards.

Module snd-vx222¶

Module for Digigram VX-Pocket VX222, V222 v2 and Mic cards.

mic

Enable Microphone on V222 Mic (NYI)

ibl

Capture IBL size. (default = 0, minimum size)

This module supports multiple cards.

When the driver is compiled as a module and the hotplug firmwareis supported, the firmware data is loaded via hotplug automatically.Install the necessary firmware files in alsa-firmware package.When no hotplug fw loader is available, you need to load thefirmware via vxloader utility in alsa-tools package. To invokevxloader automatically, add the following to /etc/modprobe.d/alsa.conf

install snd-vx222 /sbin/modprobe --first-time -i snd-vx222\  && /usr/bin/vxloader

(for 2.2/2.4 kernels, addpost-install/usr/bin/vxloader to/etc/modules.conf, instead.)IBL size defines the interrupts period for PCM. The smaller sizegives smaller latency but leads to more CPU consumption, too.The size is usually aligned to 126. As default (=0), the smallestsize is chosen. The possible IBL values can be found in/proc/asound/cardX/vx-status proc file.

The power-management is supported.

Module snd-vxpocket¶

Module for Digigram VX-Pocket VX2 and 440 PCMCIA cards.

ibl

Capture IBL size. (default = 0, minimum size)

This module supports multiple cards. The module is compiled only whenPCMCIA is supported on kernel.

With the older 2.6.x kernel, to activate the driver via the cardmanager, you’ll need to set up /etc/pcmcia/vxpocket.conf. See thesound/pcmcia/vx/vxpocket.c. 2.6.13 or later kernel requires nolonger require a config file.

When the driver is compiled as a module and the hotplug firmwareis supported, the firmware data is loaded via hotplug automatically.Install the necessary firmware files in alsa-firmware package.When no hotplug fw loader is available, you need to load thefirmware via vxloader utility in alsa-tools package.

About capture IBL, see the description of snd-vx222 module.

Note: snd-vxp440 driver is merged to snd-vxpocket driver sinceALSA 1.0.10.

The power-management is supported.

Module snd-ymfpci¶

Module for Yamaha PCI chips (YMF72x, YMF74x & YMF75x).

mpu_port

0x300,0x330,0x332,0x334, 0 (disable) by default,1 (auto-detect for YMF744/754 only)

fm_port

0x388,0x398,0x3a0,0x3a8, 0 (disable) by default1 (auto-detect for YMF744/754 only)

joystick_port

0x201,0x202,0x204,0x205, 0 (disable) by default,1 (auto-detect)

rear_switch

enable shared rear/line-in switch (bool)

This module supports autoprobe and multiple chips.

The power-management is supported.

Module snd-pdaudiocf¶

Module for Sound Core PDAudioCF sound card.

The power-management is supported.

/proc/asound/card#/pcm#[cp]/oss¶

erase

erase all additional information about OSS applications

<app_name> <fragments> <fragment_size> [<options>]

<app_name>

name of application with (higher priority) or without path

<fragments>

number of fragments or zero if auto

<fragment_size>

size of fragment in bytes or zero if auto

<options>

optional parameters

disable

the application tries to open a pcm device forthis channel but does not want to use it.(Cause a bug or mmap needs)It’s good for Quake etc...

direct

don’t use plugins

block

force block mode (rvplayer)

non-block

force non-block mode

whole-frag

write only whole fragments (optimization affectingplayback only)

no-silence

do not fill silence ahead to avoid clicks

buggy-ptr

Returns the whitespace blocks in GETOPTR ioctlinstead of filled blocks

Example:

echo "x11amp 128 16384" > /proc/asound/card0/pcm0p/ossecho "squake 0 0 disable" > /proc/asound/card0/pcm0c/ossecho "rvplayer 0 0 block" > /proc/asound/card0/pcm0p/oss