4

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 username

and added permission to write:

sudo chmod a+rw /dev/ttyUSB0

After, when I run:

ls -l /dev/ttyUSB0

I get:

crw-rw-rw- 1 username dialout 188, 0 jūl  2 16:09 /dev/ttyUSB0

However,I still get the same error message from the IDE.

Any help would be greatly appreciated!

  • Also have set the port in Tools to ttyUSB0 – Neal Jul 2 '18 at 13:38
  • log-out and log-in arduino.cc/en/Guide/Linux#toc6 – Juraj Jul 2 '18 at 13:41
  • Are you sure it's /dev/ttyUSB0? A real Arduino will be /dev/ttyACM0. Maybe yours is a cheap chinese clone? – Majenko Jul 2 '18 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 Jul 2 '18 at 17:56
  • Were you able to make it work? – user171780 Sep 21 '18 at 14:20
1

As mentioned on the official guide 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 and you should be good to go.

1

When you run

ls -l /dev/ttyUSB0

you have

crw-rw-rw- 1 username dialout 188, 0 jūl  2 16:09 /dev/ttyUSB0

The Problem is you have the 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.  

enter image description here

Hope this helps.

0

I'm running Arduino IDE on Ubuntu Studio. My board is a Chinese Arduino NANO. At first I tried to install the IDE from the software manager. I got the same errormessage en tried all the chmod and chown tricks but none of them worked. I came across a solution witch was to remove my IDE and replace it with de provided software from the arduino.cc site.

I was able to connect to /dev/ttyUSB0 but got a 'sync' errormessage... I chose Arduino NANO as board and the ATmega328P(Old Bootloader) as processor. It all worked out fine for me.

Hopefully this will help you guys.

0

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 called arduino-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.

terminal

-1

The only way I could install the IDE and pass the programs without giving permission error, in an Ubuntu 18.4, using make.

See this answer to How to install latest Arduino IDE?.

  • 1
    this is not an answer to this Question about permission to tty port – Juraj Oct 24 '18 at 14:21

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.