Ubuntu
linux package

  1. Lunar (23.04)
  2. Bug #1958191
  3. Comment #20

Comment 20 for bug 1958191

Revision history for this message
Ernst Sjöstrand (ernstp) wrote : Re: [i915] Screen flickering in Ubuntu 22.04 (until i915.enable_dc=0 intel_idle.max_cstate=2 are added)

When I upgraded to 22.04 I started getting flicker on my external HDMI monitor.
Latitude 7300, i7-8665U.
A batch of flicker every 15 or 30 minutes or so, not very easy to use for bisecting...
There are instances of
[336186.058517] i915 0000:00:02.0: [drm] *ERROR* CPU pipe B FIFO underrun
in dmesg but it doesn't always appear when there is flickering.