I verified it.
Adding EnableBrightnessControl to xorg.conf (either in /etc/X11/xorg.conf or other ways as suggested by Cley) fixed it for me, i can now change brightness.
I verified it.
Adding EnableBrightnes sControl to xorg.conf (either in /etc/X11/xorg.conf or other ways as suggested by Cley) fixed it for me, i can now change brightness.