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 issue corresponds with error:
[Fri Apr 29 13:10:21 2022] i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO 
underrun

I tried to set:
intel_idle.max_cstate=4 
i915.enable_psr=0
It probably reduces the frequency the issue comes up but does not fix it.

sudo lshw -c video
  *-display                 
       description: VGA compatible controller
       product: Skylake GT2 [HD Graphics 520]
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       logical name: /dev/fb0
       version: 07
       width: 64 bits
       clock: 33MHz
       capabilities: pciexpress msi pm vga_controller bus_master cap_list rom fb
       configuration: depth=32 driver=i915 latency=0 resolution=2560,1440
       resources: irq:130 memory:e0000000-e0ffffff memory:c0000000-dfffffff 
ioport:e000(size=64) memory:c0000-dffff

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1970426

Title:
  screen suddenly starts flickering after update

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+bug/1970426/+subscriptions


-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to