# No argument shows current brightness level.ī=$(xrandr -current -verbose | grep Brightness)
# n An integer from 0 to 100 specifies a brightness level. # Examples: brightness 75 brightness -5 brightness +10 I got a temporary solution at some point: # brightness: Change all monitors brightness in software. My eyes at night don't seem to like the amount of light they receive. I am very tired of this issue since I tried so many solutions before asking. I have seen multiple people using Lenovo laptops without this kind of problem. I have tried multiple GNU/Linux distributions in live USB mode to test if the brightness controller works and I found none. I tried this too, adding additional options to the conf file: Brightness not working after installing NVIDIA driver
I tried to update the grub file as mentioned and I updated grub after the change(still not working) I have tried to modify the xorg file based on the instructions here: The NVIDIA driver my system currently use has version 460.39. I am using Ubuntu 20.04 and I have both list of packages and system updated. I never had the brightness controller working using Fn+ F5(down)/ F6(up) working on Ubuntu.