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I've been using 20.04 and I updated to 22.04. After a few days a black flickering appears randomly, it's very annoying and it didn't happen before. Any idea what might be the cause?

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  • 1
    Unfortunately, I have the exact same issue. I attempted to enable and dissable Wayland in /etc/gdm3/custom.conf but that made no difference.
    – Dan
    Apr 28, 2022 at 16:05
  • Why can't you wait to August to upgrade to the stable version when it is released?
    – Jonte YH
    Apr 30, 2022 at 7:59
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    I have the same problem, and I'm glad that it seems not to be a hardware issue, as you're also experiencing after 22.04 update.
    – André Carvalho
    May 1, 2022 at 0:35
  • same here on dell laptop latitude with intel HD integrated GPU. This flickering display stops when I move my mouse and come back sometimes on certain mouse position then disapear again on mouse move.
    – utopman
    May 5, 2022 at 15:36
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    hey guys, same problem here. See: bugs.launchpad.net/ubuntu/+source/linux/+bug/1970426. There are some possible config solutions posted there, and hopefully an official fix is gonna be released soon!
    – dimisjim
    May 6, 2022 at 6:07

1 Answer 1

Reset to default
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A fix would be to add the following parameters to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub:

i915.enable_dc=0
intel_idle.max_cstate=2

then update GRUB using:

sudo update-grub

You should be flicker-free now!

Source: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1970426/comments/24

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  • Thank you, tried this! And thank you for the source, I'll also be checking there whether they have any information on this bug
    – pcc
    May 7, 2022 at 1:40
  • Is it fixed now?
    – Scientist
    Jun 23, 2022 at 4:54
  • @Scientist bug is still unresolved on the launchpad link provided above
    – dimisjim
    Jun 23, 2022 at 8:11
  • Because I was struggling in which format I should add this parameter: It comes in one line separated by a space and in "" so : "i915.enable_dc=0 intel_idle.max_cstate=2"
    – Leon D
    Oct 22, 2022 at 16:38
  • I'm on 22.04 and the proposed solution didn't work for me. Following the ticket, I tried another solution -- appeanding i915.enable_psr=0 instead. I've been restarted for about 30 mins and it seems like it has worked. I found that solution here: github.com/ljvmiranda921/comments.ljvmiranda921.github.io/…
    – fearphage
    Jan 25, 2023 at 0:53

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