Фикс управления яркостью в Ubuntu 14.04

http://itsfoss.com/fix-brightness-ubuntu-1310/

sudo touch /usr/share/X11/xorg.conf.d/20-intel.conf

sudo mcedit /usr/share/X11/xorg.conf.d/20-intel.conf


Section "Device"
        Identifier  "card0"
        Driver      "intel"
        Option      "Backlight"  "intel_backlight"
        BusID       "PCI:0:2:0"

EndSection