The solution to bug 1970426 ended up being:
i915.enable_dc=0
intel_idle.max_cstate=2
Can you try those?
** Summary changed:
- Flickering and disforming booting into desktop both on wayland/xorg
+ [i915] Flickering and deformed booting into desktop both on wayland/xorg
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Thanks for the video. Although it looks a little different to bug
1970426 I would definitely still class it as the same bug until proven
otherwise (when a fix for that bug is available and if it doesn't work
for your machine).
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also worth mentioning, on the kernels of ubuntu 20.04 i never had this
flickering
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https://bugs.launchpad.net/bugs/1958191
Title:
Flickering and disforming booting into desktop both on
Video with the flickering, currently testing kernel 5.15.0-27-generic
** Attachment added: "20220504_113918.mp4"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1958191/+attachment/5586600/+files/20220504_113918.mp4
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Can you provide a video?
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https://bugs.launchpad.net/bugs/1958191
Title:
Flickering and disforming booting into desktop both on wayland/xorg
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@ Daniel #7
the bug reports look very similar to my flickering, but mine are much worst
when booting into desktop i have a few seconds till the flickering gets
unworkable and scrambles up the screen to almost black
so i'm not sure its a dupe or not myself
if you look at my upstream bug on #5 tha
** Tags added: flicker i915
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Title:
Flickering and disforming booting into desktop both on wayland/xorg
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** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1958191
Title:
Flickering and disforming booting into desktop both on wayland/xorg
Does it look like the flickering shown in bug 1970426 and its
duplicates?
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https://bugs.launchpad.net/bugs/1958191
Title:
Flickering and disforming booting into desktop both on wayland/
booting with kernel parameter i915.enable_psr=0 does not influence the
flickering
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Title:
Flickering and disforming booting into desktop both on
Filed bug upstream:
https://gitlab.freedesktop.org/drm/intel/-/issues/5569
** Bug watch added: gitlab.freedesktop.org/drm/intel/-/issues #5569
https://gitlab.freedesktop.org/drm/intel/-/issues/5569
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on 5/04/2022 Ubuntu 22.04 Beta with kernel 5.15.0-25-generic
this flickering is still persisting and needs the parameter
intel_idle.max_cstate=4
to be usable again
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adding dmesg for 5.15 without cstate paramater
** Attachment added: "dmesg-without-cstate.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1958191/+attachment/046/+files/dmesg-without-cstate.txt
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