Screen flickering in Ubuntu 22.04 and Intel UHD graphics (adding "i915.enable_dc=0 intel_idle.max_cstate=2" doesn't help)

[kjur]

Intermittent screen flickering (random moving image sideways).
Issues started after upgrade to 22.04 (kernel 5.15, last 5.13 kernel from 21.10 was fine).

A similar bug to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1958191

but adding below line to grub options:

"i915.enable_dc=0 intel_idle.max_cstate=2"

and executing "sudo update-grub" doesn't help.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-5.15.0-33-lowlatency 5.15.0-33.34
ProcVersionSignature: Ubuntu 5.15.0-33.34-lowlatency 5.15.30
Uname: Linux 5.15.0-33-lowlatency x86_64
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: XFCE
Date: Tue May 31 20:06:18 2022
InstallationDate: Installed on 2021-05-12 (383 days ago)
InstallationMedia: Xubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420)
SourcePackage: linux-signed-lowlatency
UpgradeStatus: Upgraded to jammy on 2022-05-07 (24 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[kjur (kjur)]

I use and seems like adding "intel_iommu=off" to grub options has solved the flickering problem.
It's described here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1958191

[kjur (kjur)]

The very recent 5.15.0-40-lowlatency kernel has fixed the issue. The bugs can be closed now.