Arduino IDE : USB Ports Not Found
June 27, 2009 By miketeo
If you have upgraded or installed Fedora Core 11, you might find that your USB ports are not listed or the Serial Port menu is greyed out on the Arduino IDE. This is due to a change of group ownership for the /dev/ttyUSBx ports in FC11.
To resolve this, simply add your user (eg. myuser) to the dialout group in /etc/group like this:
dialout:x:18:myuser
Then logout from your desktop and re-login back again.
I tried your method (edit /etc/group and insert line dialout:x:18:, and it didn’t work. Even though I’ve logged out and back in. I am able to write to the arduino if I run arduino as root, which is kind of a pain. Any suggestions?
You may want to check what’s your group ownership for the USB tty device.
For mine, it’s something like the following:
In my corresponding /etc/group file, my entry will look like this:
where miketeo is the account that I use to program my arduino.
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