Public bug reported:
System information
------------------
Distributor ID: Ubuntu
Description: Ubuntu Jammy Jellyfish (development branch)
Release: 22.04
Codename: jammy
Integrated AMD GPU: AMD Ryzen 7 5800H with Radeon Graphics
GPU : NVIDIA GA106M [GeForce RTX 3060 Mobile / Max-Q] with
nvidia-driver-510
Description of the problem
--------------------------
I can't change the brightness of the screen using the hot keys or the
settings menu.
It is clear that these buttons are acting on the value stored in
/sys/class/backlight/nvidia_0/brightness, but has no effect on the
actual brightness.
However, modifying manually the value in
/sys/class/backlight/amdgpu_bl0/brightness changes the actual
brightness.
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: amd-gpu brightness nvidia
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https://bugs.launchpad.net/bugs/1961039
Title:
Brightness control with integrated AMD GPU and NVidia GPU
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