Cepton Viewer fails to launch in Ubuntu

[Robaire]

The application immediately hangs and the user must force quit the application. Attempting to run the application with root privileges shows the following message on termination

XIO:   fatal IO error 0 (Success) on X server ":0"
       after 239 requests (239 known processed) with 35 events remaining.
terminate called without an active exception

In my testing this seems to be related to the kernel version, and the problem disappears when booting from safe mode. Tested in Ubuntu 20.04 with kernel 5.8.0-49-generic x86_64.

[amjack0]

you have to connect the sensor first, then start the "Cepton Viewer", it works fine !
tested on ROS noetic (20.04 LTS)