Created attachment 866178 [details] Xorg.1.log.gz (In reply to Stefan Dirsch from comment #9) > Thanks. Would be interesting to see whether X fiddles also with the nvidia > GPU. For this please attach also your X logfile. I think for KDE you find > this in ~/.local/share/xorg, but could also be in /var/log. Or somewhere > hideen in journalctl output (sddm process). Fabian will know. The external GPU is currently not connected, I just mentioned it because it explains why I'm having the i915.force_probe=46aa. Anyway, here's the X logfile from ~/.local/share/xorg.