Public bug reported:
When running the HWE kernel linux-6.5.0-18 and newer in Ubuntu 22.04.4
LTS ( 6.5.0-18.18~22.04.1 ), I get intermittent freezes of about 1-5
seconds of the whole UI (even the mouse pointer stops moving). Sound
continues to work. There is absolutely nothing logged in the kernel or
any other system logs.
I downgraded the kernel in a current up-to-date Ubuntu 22.04.4, and it's
running perfectly fine with linux-image-6.5.0-17-generic (
6.5.0-17.17~22.04.1 ).
As intuition I suspect amdgpu or its interaction with firmware, since
there is nothing logged in the kernel and its a graphical issue. I
couldn't find the patch log of the ubuntu kernel, but vanilla 6.5.17 to
6.5.18 has some amdgpu patches which I guess might be involved, if
ubuntu 6.5.0-17 to 6.5.0-18 has anything to do with those vanilla kernel
versions.
I am attaching the two files (version.log and lspci-vnvn.log called no-
freezes_version.log and no-freezes_lspci-vnvn.log) when no freezes
happen now (kernel 6.5.0-17). After a reboot I will attach the ones when
freezes happen (rebooted with current HWE LTS kernel),
1)
> lsb_release -rd
Description: Ubuntu 22.04.4 LTS
Release: 22.04
2) linux-generic-hwe-22.04: Installed: 6.5.0.21.21~22.04.11
3) No freezes
4) Intermittent UI freezes of 1-5 seconds including mouse pointer when
starting multimedia applications, looking at images, etc. But no audio
freezes or anything. Nothing logged in system or kernel logs when it
happens.
The freeze typically happens (but might not be always like that), for
instance when starting a new youtube video in firefox or chrome, but
subsequent ones work fine for a while. However, it might also happen
when looking at a newly received image in any messenger app, it is not
exclusive to firefox, or youtube, or videos.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "no-freezes_lspci-vnvn.log"
https://bugs.launchpad.net/bugs/2055818/+attachment/5751978/+files/no-freezes_lspci-vnvn.log
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https://bugs.launchpad.net/bugs/2055818
Title:
Intermittent UI freezes since LTS HWE linux 6.5.0-18
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