Comment # 7 on bug 1160807 from Frank Sch�fer

Hmm... looks like xf86-video-ati removal+reinstallation fixed the problem.

This is what I did today:
1) Updated to 20200114, installed the X debug packages, reboot.
Result: issue still present (X failed to start, endless exit/restart loop).
However, I didn't get the segfault anymore.
Instead, there was a new error in the log:
...
(EE) /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied
...
2) Removed xf86-video-ati.
Result: X was starting again, no errors in the log.
3) Installed xf86-video-ati again.
Result: everything is fine now (X starts, no errors)

Thoughts ?
Maybe the update process didn't set some permissions correctly or messed them
up ?
What has caused the permanent restarts of X ?
The segfault might have been a separate bug. Maybe now just hidden again...