Have a same issue with my MSI GF63 laptop Intel Core i5-9300H
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https://bugs.launchpad.net/bugs/1970426
Title:
[i915] screen suddenly starts flickering after update
To manage
Yes I have the same CPU as mentioned earlier, and I'm also using X as it
is default with Kubuntu 22.04.
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https://bugs.launchpad.net/bugs/1970426
Title:
[i915] screen suddenly starts
It happens also on my laptop:
Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz
Also note that the bug tags says wayland, but I am running Ubuntu Mate
under Xorg (no Wayland).
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I want to say the evidence is mounting for this being Gen9-GPU-specific
(which covers CPU generations 6 through 10-U). But also that's probably
just the range of Intel CPUs that most people have anyway.
https://en.wikipedia.org/wiki/List_of_Intel_graphics_processing_units#Gen9
It certainly
I am having exactly same issue as first post and until mouse pointer
moved away, it wont stop glitching. My machine specs:
*-display
description: VGA compatible controller
product: CometLake-U GT2 [UHD Graphics]
vendor: Intel Corporation
physical id:
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
After a flickering occurs the following message appears on the Log:
i915 :00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun
kernel device: +pci::00:02.0
priority: 3
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Yes, I did.
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Title:
[i915] screen suddenly starts flickering after update
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Nikolai, did you also remember to run:
sudo update-grub
after each change to the kernel parameters?
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Title:
[i915] screen suddenly starts
I can confirm that neither of the following fixed the bug:
GRUB Param `i915.enable_psr=0` did not fix
`intel_idle.max_cstate=4` did not fix
`intel_idle.max_cstate=0`did not fix
x11 session did not fix
Also, I noticed that when the screen starts flickering it only stops if
I move the cursor, if I
Bug 1958191 mentions that kernel parameter intel_idle.max_cstate=4 fixed
it.
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Title:
[i915] screen suddenly starts flickering after update
To
> This should have been a release blocker.
This bug was not reported until 5 days after release. And searching for
similar bugs I can only find one possible duplicate (bug 1958191 also an
i5-8250U) that was reported before release. So at most only one person
reported it before release, that I can
Affects Xubuntu 22.04 too on Lenovo Ideapad 330s (Intel(R) Core(TM)
i5-8250U CPU @ 1.60GHz)
After about 11 days of using 22.04 release, it lead to major loss of
productivity due to the flickering. Got headaches. This should have been
a release blocker.
I was curious if it affected Debian
Sounds like the common factor is Intel Gen9 GPUs?
https://en.wikipedia.org/wiki/List_of_Intel_graphics_processing_units#Gen9
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Title:
[i915]
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