After everything else works out of the box with a fresh install of Ubuntu 12.04 I realized that brightness control via FN key doesn’t. The problem seems to be somewhere located in the Nvidia driver for GT330M and can easily be solved by adding one line to the “Device” section of /etc/X11/xorg.conf.
Hit ALT-F2
gksu gedit /etc/X11/xorg.conf
add
Option "RegistryDwords" "EnableBrightnessControl=1"
to the “Device” section so it looks somewhat like this
Section "Device"
Identifier "Default Device"
Option "NoLogo" "True"
Option "RegistryDwords" "EnableBrightnessControl=1"
EndSection
save file and finally reboot or restart lightdm with
sudo service lightdm restart
and brightness control is back in your hands!
Hi ! Didn’t work for me…… Any other solution ?