I am having issues uploading to my Arduino from the IDE on Ubuntu 18.04. The error message I have received is:
Arduino: 1.6.10 (Linux), Board: "Arduino/Genuino Uno" avrdude: ser_open(): can't open device "/dev/ttyUSB0": Permission denied
I have checked other questions similiar to this one and have tried adding myself to the dialout group running:
sudo usermod -a -G dialout usernameand added permission to write:
sudo chmod a+rw /dev/ttyUSB0After, when I run:
ls -l /dev/ttyUSB0I get:
crw-rw-rw- 1 username dialout 188, 0 jūl 2 16:09 /dev/ttyUSB0However,I still get the same error message from the IDE.
Any help would be greatly appreciated!
- Also have set the port in Tools to ttyUSB0Neal– Neal2018-07-02 13:38:45 +00:00CommentedJul 2, 2018 at 13:38
- log-out and log-inarduino.cc/en/Guide/Linux#toc62018-07-02 13:41:09 +00:00CommentedJul 2, 2018 at 13:41
- Are you sure it's /dev/ttyUSB0? Areal Arduino will be /dev/ttyACM0. Maybe yours is a cheap chinese clone?Majenko– Majenko2018-07-02 15:00:40 +00:00CommentedJul 2, 2018 at 15:00
- Yeah just discovered it is a CH340G chip. Any hope of still getting it to work? Have heard of people having success on Windows but haven't found any good troubleshooting for Linux.Neal– Neal2018-07-02 17:56:14 +00:00CommentedJul 2, 2018 at 17:56
- Were you able to make it work?user171780– user1717802018-09-21 14:20:23 +00:00CommentedSep 21, 2018 at 14:20
3 Answers3
Arduino has added a script to the install to fix this problem. I found it after much annoyance trying to get it to work with all these suggestions.
In the arduino-1.8.8-linuxarm.tar.xz file that you download is a script calledarduino-linux-setup.sh
run that from commandline with your user name./arduino-linux-setup.sh <username>
It'll ask for the root password, and then ask you to reboot. After that you won't have any more port trouble.
As mentioned on the officialguide for Linux, you need to run
sudo usermod -a -G dialout <username>
with the<username> replaced with the username of your system.After running this, log out and log in (or in some cases reboot the computer) and you should be good to go.
When you run
ls -l /dev/ttyUSB0
you have
crw-rw-rw- 1 username dialout 188, 0 jūl 2 16:09 /dev/ttyUSB0The Problem is you havethe dev as<username>, try to change to as root
sudo chown root:dialout -R /dev/Note:
One thing after your plug your USB, check your port with follow
ll /dev/tty*if you can see my port as ttyUSB0 or with difference name (i.g ttyUSBx / ttyACMx ).
and then try to compile your sketch with following,
cd /path/your/arduino/installation/$ARDUINO-DIR(pwd)cd /path/your/sketch/$ARDUINO-INO/arduino --verify sketch.ino --board arduino:avr:uno --port /dev/ttyUSB0 --verbose //compile your sketch.ino with arduino uno board.
Hope this helps.
- You definitely SHOULD NOT change the ownership of every file under /dev as
chown -Rwill.Sean Lynch– Sean Lynch2022-09-02 00:52:09 +00:00CommentedSep 2, 2022 at 0:52
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