[ubuntu] Brightness keys do not function - ubuntu 12.04

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http://ubuntuforums.org – Hello and welcome to my third issue posting. I am running ubuntu 12.04 on a compaq cq62 laptop and the brightness keys do not work using fn+f2 and f3. After finding nothing on the internet relating to this specific situation (I did find one on these forums for ubuntu 8.something) , i decided to try the instructions at (also pasted below) http://www.techjail.net/solved-brigh...-pangolin.html Code: Open terminal ( Ctrl+Alt+T ) and type:sudo gedit /etc/default/grub You will find this line in the new opened window: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" Change it to: GRUB_CMDL (Hardware)