Ubuntu
linux package

  1. Bug #1849484
  2. Comment #5

Comment 5 for bug 1849484

Revision history for this message
Daniel van Vugt (vanvugt) wrote : Re: Ultra-wide monitor recognized properly when plugged in only intermittently [Xorg only]

It's interesting you say the problem does not happen in Wayland sessions.

Your logs suggest the kernel is having trouble, which then confuses Xorg:

Oct 23 08:32:51 jik-d42-x1 kernel: i915 0000:00:02.0: HDMI-A-1: EDID is invalid:
Oct 23 08:32:51 jik-d42-x1 kernel: [00] BAD 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58
...

and

Oct 23 08:32:52 jik-d42-x1 kernel: [drm:drm_dp_dual_mode_detect [drm_kms_helper]] *ERROR* Unexpected DP dual mode adaptor ID 54

The problem "EDID is invalid" means it is either a kernel bug, a faulty monitor or a faulty connection. Please try a different HDMI cable to see if that helps.