*** This bug is a duplicate of bug 2062951 ***
https://bugs.launchpad.net/bugs/2062951
** This bug has been marked a duplicate of bug 2062951
Random flickering with Intel i915 (Gen9 GPUs) on Linux 6.8 (Ubuntu 24.04)
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https://bugs.launchpad.net/bugs/2077291
Title:
i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun in Ubuntu
22.04.4 LTS
Status in linux-signed-hwe-6.8 package in Ubuntu:
Incomplete
Bug description:
The screen flickers occasionally, specifically at night, since i added a RAM
slot DDR4 in my laptop, i thought the RAM got loose, but i didn't see any
errors in memory,
so I ran command: "journalctl -p err -b"
Got this in the logs from august 18 & august 19,2024:
अगस्त 18 21:36:48 itsjustme-Lenovo-ideapad-320-15ISK kernel: i915
0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun
अगस्त 19 09:54:14 itsjustme-Lenovo-ideapad-320-15ISK kernel: i915
0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun
I have not tried to troubleshoot it yet, but i surfed the internet and
got some hints :
work with ubuntu kernel 5.15.0-39
work with ubuntu kernel 5.15.0-46 and set
GRUB_CMDLINE_LINUX="i915.enable_psr=0 intel_idle.max_cstate=2" into
/etc/default/grub
i haven't tried the commands but it would definitely be helpful if you
explained what this does, and what exactly the problem is. I am
looking forward for your reply and appreciate any help. Thanks! Have a
great day.
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-6.8.0-40-generic 6.8.0-40.40~22.04.3
ProcVersionSignature: Ubuntu 6.8.0-40.40~22.04.3-generic 6.8.12
Uname: Linux 6.8.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.6
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Aug 19 10:04:26 2024
InstallationDate: Installed on 2024-04-11 (129 days ago)
InstallationMedia: Ubuntu 22.04.4 LTS "Jammy Jellyfish" - Release amd64
(20240220)
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: linux-signed-hwe-6.8
UpgradeStatus: No upgrade log present (probably fresh install)
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