Brightness on AMD Ryzen 7 4800H

Support Graphics & Display
4

If you don’t understand the question, it means you don’t use CUDA, so try this:

  1. Ensure secure boot is off

  2. execute:

    mhwd --install pci video-hybrid-amd-nvidia-prime

  3. Reboot

  4. Provide the contents of all files in /etc/X11/xorg.conf.d/

and we’ll take it from there.