Ubuntu
linux package

  1. Lunar (23.04)
  2. Bug #1958191
  3. Comment #33

Comment 33 for bug 1958191

Revision history for this message
Manuel Pégourié-Gonnard (mpg) wrote : Re: [i915] Screen flickering in Ubuntu 22.04 (until i915.enable_dc=0 intel_idle.max_cstate=2 are added)

I also experience flickering with Ubuntu 22.04's 5.15.0-27-generic kernel, which goes away with i915.enable_dc=0 intel_idle.max_cstate=2, and was not present with Ubuntu 20.04's latest 5.13 kernel.

Due to another bug affecting my machine, I'm now running the vanilla 5.14.20 kernel from the mainline-ppa. Out of curiosity, I tried removing "i915.enable_dc=0 intel_idle.max_cstate=2" and I've been flicker-free for several days now (I used to experience flickering a few times a day initially).

So, either the problem is specific to Ubuntu kernels, or it was introduced between 5.14 and 5.15.

Due to that other bug, and the fact the the flickering used to be infrequent, I'm not sure I'll be able to version-bisect this issue, but I'll give it a try if I can find the time.