Nvidia Driver install

I also have this
Display: x11 server: X.Org 1.20.9 driver: amdgpu

and I also had

systemd-backlight@backlight:acpi_video0.service loaded failed failed Load/Save Screen Backlight Brightness of backlight:acpi_video0

Masking
systemd-backlight@backlight:acpi_video0.service
got rid off that failed message. See also: