Troubleshooting: Linux-Specific Problems

These problems are specific to Linux users.

LightBurn Not Seeing Serial Port¶

If the controller's serial port is not visible in LightBurn, the logged in user might not have the necessary permissions to access the port. Our Linux installation directions include directions to grant access. Make sure you log out and back in for the permissions to take effect.

For your convenience, the necessary command is: sudo adduser $USER dialout && sudo adduser $USER tty

BRLTTY Driver Conflict¶

Upgrading to Ubuntu 22.04 may result in connection issues for some lasers due to a conflict with the Braille display driver BRLTTY.

To check if BRLTTY is running, run ps -fe | grep brltty in a terminal window.

You can remove BRLTTY from the system using sudo apt-get purge --auto-remove brltty.