had a similar issue here
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2062950
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https://bugs.launchpad.net/bugs/1958191
Title:
[i915] Screen flickering in Ubuntu 22.04 (until
For me and others, this started with Ubuntu 24.04 and its 6.8 kernel,
see bug 2064189.
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https://bugs.launchpad.net/bugs/1958191
Title:
[i915] Screen flickering in Ubuntu 22.04 (until
** Changed in: linux-hwe-6.5 (Ubuntu Lunar)
Status: New => Confirmed
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Title:
[i915] Screen flickering in Ubuntu 22.04 (until
** Changed in: linux-hwe-6.5 (Ubuntu Lunar)
Status: Confirmed => New
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Title:
[i915] Screen flickering in Ubuntu 22.04 (until
** Also affects: linux-hwe-6.5 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux-hwe-6.5 (Ubuntu Lunar)
Status: New => Confirmed
** Changed in: linux-hwe-6.5 (Ubuntu)
Status: New => Confirmed
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The current situation is critical and does not allow using Ubuntu. It is
also impossible to lock the screen.
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https://bugs.launchpad.net/bugs/1958191
Title:
[i915] Screen flickering in
Adding the kernel parameters to the grub configuration greatly reduces
the flicker on my Dell Precision 5480 running Ubuntu 22.04. However, it
returns every few seconds after the external display has gone to
standby, despite /sys/module/i915/parameters/enable_dc and
Asus N550JV (NVIDIA GeForce GT 750M and Intel(R) HD Graphics 4600).
Flickering appears after the screen goes to sleep.
I'm using Ubuntu 22.04.4 LTS.
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor
Integrated Graphics Controller (rev 06)
Subsystem: ASUSTeK Computer
I have the same problem on an Lenovo X260, i7-6500U. Using the
"i915.enable_dc=0 intel_idle.max_cstate=2" workaround has made the
system more stable.
This mostly seems to occur when playing a game in the browser (chrome &
firefox), e.g. chess.com.
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Same issue here. Heavy black flickering on the screen with Ubuntu 22.04
after upgrade from 20.04 and after a clean install. No extra repos, only
default packages.
Aspire 3 A315-31 series
N17Q2
Mesa Intel® HD Graphics 500 (APL 2)
Linux laptop 5.15.0-33-generic #34-Ubuntu SMP Wed May 18
Reported a new bug here:
https://bugs.launchpad.net/ubuntu/+source/linux-signed-lowlatency/+bug/1976398
as in my case adding extra option to GRUB didn't help.
Please follow there if you are also affected.
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Peter, I don't think it's a fix, but only a workaround that limits two
important power management functionalities (cpu cstates and gpu display
cstates). I hope and believe they're still working on finding a real fix
for the bug.
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Shouldn't an update be released that adds the workaround(s) mentioned
above (the Kernel boot parameters i915.enable_dc=0 or/and, if necessary,
intel_idle.max_cstate=$MAX_CSTATE_THAT_WORKS)?
So the Ubuntu 22.04 experience is improved for users with Intel graphics
while the kernel regression is
If the suggested solution doesn't work for you then please open a
separate new bug by running:
ubuntu-bug linux
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Title:
[i915] Screen
adding "i915.enable_dc=0 intel_idle.max_cstate=2" doesn't help in my
case (kernel 5.15, Intel UHD / i915 graphics)
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Title:
[i915] Screen
Having the same issue on a Lenovo T480s laptop.
Linux JP 5.15.0-30-generic #31-Ubuntu SMP Thu May 5 10:00:34 UTC 2022
x86_64 x86_64 x86_64 GNU/Linux
*-display
description: VGA compatible controller
product: UHD Graphics 620
vendor: Intel Corporation
I also experience flickering with Ubuntu 22.04's 5.15.0-27-generic
kernel, which goes away with i915.enable_dc=0 intel_idle.max_cstate=2,
and was not present with Ubuntu 20.04's latest 5.13 kernel.
Due to another bug affecting my machine, I'm now running the vanilla
5.14.20 kernel from the
done in Bug #1973676
Thanks Daniel
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Title:
[i915] Screen flickering in Ubuntu 22.04 (until i915.enable_dc=0
intel_idle.max_cstate=2 are added)
David, please open a new bug for the above.
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Title:
[i915] Screen flickering in Ubuntu 22.04 (until i915.enable_dc=0
intel_idle.max_cstate=2
Half-related to this bug but worth mentioning it because it is certainly
linked to it. On a HP x360 Spectre (i7-8565U WhiskeyLake-U GT2 [UHD
Graphics 620]), the trick with GRUB_CMDLINE_LINUX_DEFAULT.
The problem is more serious here because the screen flickers and goes to
black, purple, green,
The monitor going black is a different bug. Please don't discuss that
here, but open a new bug by running:
ubuntu-bug linux
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Title:
[i915]
Updated ubuntu from 21.04 and no matter what I do with settings, all
monitors go black every 30 seconds I do not touch the keyboard or mouse
(or running movie). I hope it will be fixed soon.
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I just updated my Ubuntu to 22.04 and I'm having the same issue.
Hopefully it'll get fixed ASAP.
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Title:
[i915] Screen flickering in Ubuntu
Hi, following up on this -
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1970426/comments/9
GRUB PARAM - `i915.enable_dc=0 intel_idle.max_cstate=2` has fixed the
flicker for me.
$ uname -a
Linux home 5.15.0-30-generic #31-Ubuntu SMP Thu May 5 10:00:34 UTC 2022 x86_64
x86_64 x86_64
Following up on this:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1958191/comments/16
Booting with 5.15.0-25-generic and the i915.enable_dc=0
intel_idle.max_cstate=2 configs seems to fix the issue on my hardware.
5.15.0-27-generic won't stop shaking randomly no matter what value I
test
@lotuspsychje : I think it would be useful to detect a behaviour change,
even if symptoms are slight different (eventually it can still help for
bug 1948778 if there are two different bugs).
@kjur : kernel series from https://kernel.ubuntu.com/~kernel-
ppa/mainline/?C=N;O=A are vanilla kernels,
@Oibaf (oibaf) - I experienced the same issue on Xubuntu 22.04 too. The very
last available xubuntu 21.10 kernel was fine. I upgraded from fully updated
21.10 to 22.40 and then the problem started.
Not sure what is the latest 21.10 available kernel. Perhaps 5.13.0.1022.23 ?
Not sure how to do a
I can confirm that adding `i915.enable_dc=0 intel_idle.max_cstate=2`
works for me on i7-7600u. No more screen flickering in the last two
days. Without the workaround the flickering occurs randomly and
definitively in correlation to mouse movement, but I'm not sure how
exactly. As already stated by
@ Oibaf #19
If it can help, i start helping debug ubuntu 22.04 from the start
with kernel 5.13.0-19.19-generic with light flickering (workable)
see bug https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1948778
and heavy unworkable flickering started (in this bug) with kernel series
When I upgraded to 22.04 I started getting flicker on my external HDMI monitor.
Latitude 7300, i7-8665U.
A batch of flicker every 15 or 30 minutes or so, not very easy to use for
bisecting...
There are instances of
[336186.058517] i915 :00:02.0: [drm] *ERROR* CPU pipe B FIFO underrun
in dmesg
Daniel van Vugt (vanvugt) asked for a kernel bisect with the kernel mainline
PPA:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1970426/comments/22
If someone is willing to do it he can do this (from
https://wiki.ubuntu.com/Kernel/KernelBisection#Version_bisecting_upstream_kernels):
The
I'm not using wayland. I stated that I was on X11.
I did sudo update-grub indeed!
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Title:
[i915] Screen flickering in Ubuntu 22.04 (until
@ Diogo #16
did you also sudo update-grub after the kernel paramater?
and doublechecked if you are using your intel card and not your nvidia on
wayland?
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I'm having the same issue, I'd like to add that I've tested both Xubuntu
22.04 and Ubuntu 22.04 and was able to reproduce the same error. Now I'm
running Kubuntu 22.04 with the following spec:
OS: Kubuntu 22.04 LTS x86_64
Kernel: 5.15.0-27-generic
Shell: bash 5.1.16
Resolution: 1920x1080 @
** Summary changed:
- [i915] Flickering and deformed booting into desktop both on wayland/xorg
+ [i915] Screen flickering in Ubuntu 22.04 (until i915.enable_dc=0
intel_idle.max_cstate=2 are added)
** Tags added: regression-release rls-jj-incoming
** Changed in: linux (Ubuntu)
Status:
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