Hello munbi and thanks for this bug report. I marked the other two bugs
you filed as duplicates of this one, and added "tasks" for the packages
you filed the other bugs against. One bug report can track a problem
across several packages, so there's no need for multiple reports.
I don't think xserver-xorg-video-amdgpu is really involved here. If you
can reproduce this issue without logging it to the graphical console,
i.e. by calling `sensors` from tty, and you agree that this proves that
Xorg is not involved, then please change the status of the xserver-xorg-
video-amdgpu task to Invalid.
My feeling is that we're seeing a kernel issue here. If you can
reproduce it with Hirsute (the current Ubuntu devel version) then I
think we can add a "regular" kernel task, as the problem is not HWE-
specific.
Currently linux-image-generic 5.10.0.14.16 is in the Hirsute -proposed
pocket. Could you try to test that newer kernel and report how it
behaves?
I'm setting the status of this bug to Incomplete for the moment, waiting
for the results of your testing.
** Changed in: linux-signed-hwe-5.8 (Ubuntu)
Status: New => Incomplete
** Changed in: lm-sensors (Ubuntu)
Status: New => Incomplete
** Changed in: xserver-xorg-video-amdgpu (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1910562
Title:
Fans switching on and off every 10 seconds after update to kernel
5.8.0-34
Status in linux-signed-hwe-5.8 package in Ubuntu:
Incomplete
Status in lm-sensors package in Ubuntu:
Incomplete
Status in xserver-xorg-video-amdgpu package in Ubuntu:
Incomplete
Bug description:
After updating via apt dist-upgrade from kernel 5.4.0-59 to kernel
5.8.0-34 the fan on my machine started switching on (for an instant)
and off every 10 seconds even when idle with CPU at 48/50°C.
Switching back to previous kernel solves temporary the problem, i.e.
fans are always off with light desktop work.
The new behavior is really annoying and I guess not healthy for the
fans.
I'm on latest Dell bios, with every other package updated.
Di something in the thermal policies change between those two kernels?
Is it possible to go back to previous behavior ?
Thanks in advance for help
Machine: Dell Precison 7540, intel i7-9750
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.8.0-34-generic 5.8.0-34.37~20.04.2
ProcVersionSignature: Ubuntu 5.8.0-34.37~20.04.2-generic 5.8.18
Uname: Linux 5.8.0-34-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Jan 7 17:14:54 2021
InstallationDate: Installed on 2020-05-06 (246 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: linux-signed-hwe-5.8
UpgradeStatus: No upgrade log present (probably fresh install)
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