See also similar bug 2064189.
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https://bugs.launchpad.net/bugs/2062951
Title:
Random flickering with i915 on Linux 6.8
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## Summary:
Random screen glitches appearing as horizontal lines flickering from left to
right on a clean install of Ubuntu 24.04.
## Description:
I experience random screen flickering on a clean install of Ubuntu
24.04. The glitches appear as horizontal lines that flicker from the
left side
@Davron - downgrading the kernel to 6.7 should work for now, but I just
went back to 22.04 as I also had issues with laptop shutdown state etc
Also worth clicking the "this bug affects me" thing at the top as I
don't think devs will bother unless the issue gets some visibility.
Seen quite a few
This has happened since the very first day of a clean installation on a
pc. Thought since it might not have downloaded all drivers yet, maybe it
would get fixed over time, but it still persists. Any way to fix it
manually?
# System Details Report
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## Report details
- **Date generated:**
This seems to be related to the newer Intel Xe driver included with
kernel 6.8.x as it only occurs when the driver is enabled. When using
nomodeset in grub, there are no issues (besides losing brightness
controls etc from no driver being loaded).
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Update:
Still happens on Kubuntu 24.04 with Linux 6.8.0-32 (6.8.4).
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https://bugs.launchpad.net/bugs/2062951
Title:
Random flickering with i915 on Linux 6.8
To manage notifications
I've tried adding "intel_idle.max_cstate=4" too but it didn't fix anything for
me.
Both KDE Plasma and Xfce have the same behavior.
I'm also on a Skylake GT2 [HD Graphics 520] - no issues on 23.10 as I
didn't change kernel, but 24.04 with kernel 6.8 is where I'm
experiencing this.
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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Title:
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Anthony Wong (anthonywong)
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https://bugs.launchpad.net/bugs/2062951
Title:
Random flickering with i915 on Linux 6.8
To
** Tags added: kernel-bug regression-release
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https://bugs.launchpad.net/bugs/2062951
Title:
Random flickering with i915 on Linux 6.8
To manage notifications about this bug go to:
Update:
I did some preliminary testing and it seems like adding
"intel_idle.max_cstate=4" to cmdline resolves the issue but probably at the
power efficiency cost.
I also tried "i915.enable_psr=0" but it didn't help just made the
flickering a slightly different.
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