Yesterday I upgraded Ubuntu 22.04 to 24.04.1 and the bug is now gone
On Mon, Sep 2, 2024 at 6:51 PM Sütő Norbert <2062...@bugs.launchpad.net>
wrote:
> GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_iommu=igfx_off"
>
>
> It also fix on my side.
>
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GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_iommu=igfx_off"
It also fix on my side.
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Title:
Random flickering with Intel i915 (Gen9 GPUs) on
Having the same issue with external monitor occasional flicker. Moving
the mouse stops the flicker when it occurs. Happens every 15 to 30
minutes.
Adding intel_iommu=igfx_off to /etc/default/grub resolved the issue for
me too.
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_iommu=igfx_off"
VGA
Hi Bozsoki,
From the schedule, 2024.08.05 cycle will release 6.8.0-44 kernel.
So, the optimise schedule will be at the end of Oct, which is 8 weeks later.
https://kernel.ubuntu.com/
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http
Hi AceLan Kao,
When is version 6.8.0-45.45 expected?
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Title:
Random flickering with Intel i915 (Gen9 GPUs) on Linux 6.8 (Ubuntu
24.04)
To man
Further to my comment #75, the workaround no longer works after the
latest update.
It worked with kernel linux-image-6.10.6-zabbly+ but no longer works
with kernel linux-image-6.10.7-zabbly+
This is incredibly frustrating and upsetting.
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To add some useful information to this, a workaround (explained in
duplicate bug #2078054) is to install the Zabbly mainline kernel [1].
This also seems to be related to bug #2049248 (but not a duplicate).
As far as I can tell, this affects certain Intel displays, though I
could be wrong.
[1] ht
for me, sudo apt install linux-oem-22.04 reduced significantly the
occurence of the flickering but did not eliminate it completely!
81XM Lenovo IdeaPad S145-15I, GPU: Intel UHD Graphics 620, OS: Ubuntu
24.04 LTS x86_64, Kernel: 6.8.0-41-generic
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I've submitted SRU for all Skylake GPU, and looks like we need to add
KBL GPU to the list, too.
Jeffery in #65 and Abdullah in #72 use KBL.
We don't have SRU cycle in Sep., so will wait for another month to
collect more info and submit another SRU later.
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I'm having a similar issue..
https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.8/+bug/2077220
Using 'intel_iommu=igfx_off' has been fixed my problem
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Thanks @acelankao <3
I can confirm the issue is fixed when upgrading to `sudo apt install
linux-oem-24.04` (upgrades to `6.8.0-1011-oem` in my case).
I had the same issue with a fresh Ubuntu 24.04 (kernel 6.8.0-41-generic)
and a completely new Dell XPS 13 9340 with the non-touch internal
display.
Hi Leonardo,
Yes, we know the MTL flickering issue, you can try using
"i915.enable_psr2_sel_fetch=0".
The fix is planning to be landed on 6.8.0-45.45 or later.
Or you can try switching to use 6.8-oem kernel which already includes the fix.
sudo apt install linux-oem-22.04
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Hi I am on Ubuntu 22.04 and I am having this flickering issue too.
lspci -nnk | grep -A3 VGA
:00:02.0 VGA compatible controller [0300]: Intel Corporation Device
[8086:7d55] (rev 08)
Subsystem: Dell Device [1028:0c6b]
Kernel driver in use: i915
Kernel modules: i915, xe
** Changed in: linux-hwe-6.8 (Ubuntu Noble)
Status: Confirmed => Invalid
** Changed in: linux-hwe-6.8 (Ubuntu Oracular)
Status: Confirmed => Invalid
** Also affects: linux (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: linux-hwe-6.8 (Ubuntu Jammy)
Im
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-hwe-6.8 (Ubuntu)
Status: New => Confirmed
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-hwe-6.8 (Ubuntu Noble)
Status: New => Confirmed
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** Also affects: linux-hwe-6.8 (Ubuntu)
Importance: Undecided
Status: New
** Tags added: regression-update
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Title:
Random flickering w
** Tags added: jammy
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Title:
Random flickering with Intel i915 (Gen9 GPUs) on Linux 6.8 (Ubuntu
24.04)
To manage notifications about this bug
I experienced these graphical glitches on my Dell E7270 (with HD
Graphics 520) and "intel_iommu=igfx_off" appears to have cured them.
But noting that I only ever saw the glitches very occasionally (maybe
once every few hours) and couldn't reliably reproduce. In any case, I've
used the system for a
** Changed in: linux (Ubuntu Noble)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Noble)
Status: In Progress => Fix Committed
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> And in this bug, we are trying to fix the flicker issue that can be worked
> around by intel_iommu=igfx_off
> I'll need your VGA PCI ID if intel_iommu=igfx_off works for you.
>lspci -nnk | grep -A3 VGA
$ lspci -nnk | grep -A3 VGA
00:02.0 VGA compatible controller [0300]: Intel Corporation U
I believe there are 2 types of flicker issues.
If disable PSR works for you, you can attach your panel edid on bug 2069993
sudo get-edid > edid.bin
Our colleague will help you adding your panel to the driver.
And in this bug, we are trying to fix the flicker issue that can be worked
around by
Thanks Jeffrey, I didn't see your post before I updated. Yes it appears
I'm experiencing a bug with the latest i915 driver (linked above) and
not exactly the bug reported here
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Alright, I tried everything here and the only thing that fixes it for my
system is:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash options i915.enable_psr=0"
in /etc/default/grub
I don't need intel_iommu=igfx_off
Ref: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11762
** Bug watch added:
> model name : Intel(R) Core(TM) Ultra 7 155H
Hi Sean, this processor does not appear to have a Gen9 GPU. You are
likely experiencing another bug. You may consider opening a new bug
report.
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The proposed workaround does not work for me.
user@userpc:~$ cat /proc/cmdline
BOOT_IMAGE=/vmlinuz-6.8.0-40-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro
quiet splash vt.handoff=7 intel_iommu=igfx_off
user@userpc:~$ uname -a
Linux user-ivrnd-intel 6.8.0-40-generic #40-Ubuntu SMP PREEMPT_DYN
I'm having a similar issue on a T480 with a discrete Nvidia Geforce
MX150 and Intel UHD Graphics 620
Recently updated to Xubuntu 24.04 from 22.04 and now after a random
amount of time purple lines appear from the bottom of the screen and
then it goes black, similar to this Reddit post -
https://w
Thanks for reporting the issue, here is the SRU
https://lists.ubuntu.com/archives/kernel-team/2024-August/152750.html
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Title:
Random flickering w
** Description changed:
+ SRU Justification
+
+ [Impact]
+ The flickering predominantly occurs when the mouse cursor is in the bottom
quarter of the screen and stops when the cursor leaves this area.
+ Extensive testing across various kernel versions revealed that the issue
became apparent from
** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Oracular)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: Confirmed
** Changed in: linux (Ubuntu Noble)
Status: New => In Progress
** Changed in:
@acelankao
The patched kernel (without any parameters) seems to be working without any
issues.
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Title:
Random flickering with Intel i915 (Gen9 G
This kernel added the SKL ID to the quirk which did the same thing as
intel_iommu=igfx_off
We may have to carry these quirks before Intel provides a real fix.
Please give it a try and I'll submit SRU later.
https://people.canonical.com/~acelan/bugs/lp2062951/
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Update:
Thanks to @jeff250 it seems like we narrowed the issue to kernel config changes
between 6.6 and 6.8 in Ubuntu kernels.
Unfortunately, proper fix is still not available but we have a working
workaround (intel_iommu=igfx_off).
More details can be found at upstream bug report:
https://gitla
@jeff250 - can confirm this has fixed it for me as well
intel_iommu=igfx_off
Huge thanks!
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Title:
Random flickering with Intel i915 (Gen9 GPUs)
** Changed in: linux
Status: Unknown => New
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Title:
Random flickering with Intel i915 (Gen9 GPUs) on Linux 6.8 (Ubuntu
24.04)
To manage
@Rapha
there was already one, it's also linked here now.
** Also affects: linux via
https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11504
Importance: Unknown
Status: Unknown
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@jeff250 you nailed it - thank you for finding that. No more problems on
my computer (Intel® Core™ i5 CPU M 560 with Intel Core Processor
Integrated Graphics Controller i915, Thinkpad T410)
According to [this
section](https://www.kernel.org/doc/html/v6.8/arch/x86/iommu.html?highlight=intel_iommu#g
> Thank you for doing your research into the issue but I am confused by
> your results.
>
> Are you claiming that removing mentioned Ubuntu specific commit resolves
> the issue?
Specifically it's the first commit where I experience the bug, so I
would assume that reverting it will resolve the iss
@jeff250
Thank you for doing your research into the issue but I am confused by
your results.
Are you claiming that removing mentioned Ubuntu specific commit resolves
the issue?
What about the fact that the issue also affect upstream/mainline
kernels?
Are you trying to say that the issue is just
Hello,
upgraded from ubuntu 23.10 to 24.04, when at the first time I saw
flickering.
some attempts:
1) sudo gedit /etc/modprobe.d/i915.conf
options i915 enable_psr=1 (0 value was what I found there)
2) sudo gedit /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="intel_pstate=guided quiet splash opti
Despite some of the nondeterminism behind this bug, I believe I have
bisected this bug to the following commit in the Ubuntu kernel tree:
14ebfcacaeb07b02235f2ea881fd6e34e3de0d6f .
More info is available on this commit here:
https://git.launchpad.net/~ubuntu-
kernel/ubuntu/+source/linux/+git/unsta
had a similar issue here
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2062950
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Title:
Random flickering with Intel i915 (Gen9 GPUs) on Li
Same issue
Linux cxl 6.8.0-38-generic #38-Ubuntu SMP PREEMPT_DYNAMIC Fri Jun 7
15:25:01 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
Gnome 46 Wayland
HP EliteBook 850 G3
Intel Core i5-6300U
Intel HD Graphic 520 (SKL GT2)
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I have this issue on integrated Intel UHD Graphics 620. Usually when
mouse pointer is on the bottom of the screen, either side. It's very
random and hard to reproduce but I could try to record with a different
device.
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Me too. I did the things below. I'll now test if the flicerking is gone.
Interesting quote above: "running on battery also seems to worsen the
problem slightly.". I normally use my laptop on power, but on battery
for the past days. So that might be reason I only noticed it now.
sander@witje:~$
It affect me as well.
I have Intel(R) UHD Graphics (CML GT2) and using i915 driver.
Added below lines to grub:
i915.enable_dc=0 intel_idle.max_cstate=2
No luck.
Then changed it to:
i915.enable_dc=0 intel_idle.max_cstate=4
as per some suggestions
Also no luck.
I experienced the issue a few yea
@acelankao
Reported upstream:
https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11504
** Bug watch added: gitlab.freedesktop.org/drm/i915/kernel/-/issues #11504
https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11504
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It's an regression in i915 driver, and I can't find a machine here in
our lab to reproduce this issue.
I can teach you how to bisect the kernel to identify the problematic commit,
but it's time-consuming. Alternatively, you can file a bug report for Intel
using the link below.
https://gitlab.fre
Disabling "C states" in the BIOS works in my case, Idk how power
consumption is affected for users who need greater battery life. (I
don't use battery)...
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Affects me too in Ubuntu 22.04 updated.
Linux gp-hp 6.8.0-35-generic
AMD Radeon(TM) Graphic depth=32 driver=amdgpu latency=0
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Title:
Random flic
The 8350U has a Gen9 GPU:
https://en.wikipedia.org/wiki/List_of_Intel_graphics_processing_units#Gen9
Blame Intel for using confusing terminology where their CPU generation
number has no relationship to the GPU generation number.
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I'm running Dell Latitude 7390 with Intel UHD Graphics 620 (8350U). So
8th Gen rather than 9th. I get occasional glitching, usually on battery
power and when scrolling, and always when pointer is in the bottom right
of screen. I did try the kernel params listed here (i915.enable_dc=0
intel_idle.
@acelankao
I have tried 6.10.0-061000rc2drmtip20240604-generic, still have this
problem.
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Title:
Random flickering with Intel i915 (Gen9 GPUs) o
No change using intel_idle.max_cstate=2
It does look like its affected by cursor position as @eugenesan noted in
an earlier post.
Anecdotally, and supporting the cstate argument a little, running on
battery also seems to worsen the problem slightly.
Still struggling to find a definitive trigger
@acelankao
Last mainline version I tried was 6.8.7 and at the time it was as bad as on
6.8.0-11.
Unfortunately, on my hardware, bisecting/testing this bug would take
unreasonable amount of time and risk running bleeding edge kernel since
even with 6.8.0-35 it happens only once in 1 to 3 days.
I
It doesn't affect me, but currently 28 other people are saying it
affects them so I'm sure someone can try that.
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Title:
Random flickering with I
Do you ever try drm-tip kernel to see if there is a fix in the upstream?
https://kernel.ubuntu.com/mainline/drm-tip/
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Title:
Random flickering wi
** Summary changed:
- Random flickering with Intel i915 on Linux 6.8 (Ubuntu 24.04)
+ Random flickering with Intel i915 (Gen9 GPUs) on Linux 6.8 (Ubuntu 24.04)
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