Comment 75 for bug 726033

@Giovanni

You may use the jockey program:
    * in Unity, simply type "Jockey" is the Dash search entry and the icone of the program will appears.
    * in the gnome panel menu go into: System > Administration > Additional Drivers
    * or start the program from the console: "jockey-gtk"

Then if you have an AMD GPU it will propose to install the fglrx driver. Select that option and press "Activate".
You will have to reboot your system.