Ubuntu 22.04 Lock Screen is changing the brightness level automatically - Asus Vivobook

[Madhan]

Ubuntu 22.04 Lock Screen is changing the brightness level automatically - Asus Vivobook OLED 15. Also, fingerprint scanner seems not to work.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-6.5.0-27-generic 6.5.0-27.28~22.04.1
ProcVersionSignature: Ubuntu 6.5.0-27.28~22.04.1-generic 6.5.13
Uname: Linux 6.5.0-27-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 19 17:38:06 2024
InstallationDate: Installed on 2024-04-18 (0 days ago)
InstallationMedia: Ubuntu 22.04.4 LTS "Jammy Jellyfish" - Release amd64 (20240220)
SourcePackage: linux-signed-hwe-6.5
UpgradeStatus: No upgrade log present (probably fresh install)

[Anthony Wong (anthonywong)]

Does it only happen in the lock screen?
Assuming you're using gnome, does turning off automatic brightness make a difference?

https://help.gnome.org/users/gnome-help/stable/power-autobrightness.html.en
https://itsfoss.com/automatic-brightness-ubuntu/

[alexey (loki5000)]

I have the same problem on Asus Vivobook 16X OLED M7600QC
Uname: 6.5.0-28-generic

[alexey (loki5000)]

The problem is related to nVidia GPU. Brightness works fine on CPU built-in graphics.