I did the following changes and am now flicker-free for two days:
In file /etc/default/grub I added to parameter GRUB_CMDLINE_LINUX_DEFAULT:
i915.enable_dc=0
intel_idle.max_cstate=2
then:
sudo update-grub
reboot
My laptop is now usable but it cant be a permanent solution to disable
energy saving
Likely similar to:
https://bugs.launchpad.net/ubuntu/+bug/1970426
https://gitlab.freedesktop.org/drm/intel/-/issues/5569
https://gitlab.freedesktop.org/drm/intel/-/issues/5238
** Bug watch added: gitlab.freedesktop.org/drm/intel/-/issues #5569
https://gitlab.freedesktop.org/drm/intel/-/issues/5
This problem also occurred to me using a fresh install of Ubuntu 22.04.
Firefox throws an error:
glxtest: Could not connect to wayland socket
Firefox falls back to xwayland. I noticed it as all the text was unsharp using
fractional scaling.
The problem also occurred when removing firefox snap an
I can also confirm that I experience this issue.
Before, I used Ubuntu 21.04 with Wayland, similar hardware/settings and the
corresponding kernel of 21.04 and never had this issue once.
After a fresh install of 22.04 it came up around once per hour.
When running "dmesg -T", the occurrence of the
