comment 6): It was Mesa-dri-nouveau-23.0.0-346.1 package, yes, that patch was applied. comment 9): I am using KDE plasma of course ;) btw. I had also such an X server crash using the 22.3.5 Mesa now, but it happens way more often with 23.0.0 (minutes versus days). I will try tomorrow to use wayland btw (today I am doing homeoffice)