AMD Driver Ubuntu 12.04 - the long answer

All of this information was jacked from http://askubuntu.com/a/126513 . I just edited and am providing it here so I don't have to use Google every time I need to install AMD's drivers.

The following Instructions are how to install the latest ATI Catalyst Video driver on a fresh install of Ubuntu 12.04 Precise ONLY.

Caution: Only use these instructions if you have opted NOT to use the Official Ubuntu Binaries.

You need to install some dependencies to your system, do this by running these in Terminal:

sudo apt-get install build-essential cdbs fakeroot dh-make debhelper debconf libstdc++6 dkms libqtgui4 wget execstack libelfg0 dh-modaliases

sudo apt-get install ia32-libs

sudo apt-get install ia32-libs-multiarch

sudo apt-get install i386 lib32gcc1

sudo apt-get install libc6-i386 

Installation and building of the drivers

sudo sh amd-driver-installer-*.run --buildpkg Ubuntu/precise

sudo dpkg -i *.deb

sudo aticonfig --initial

After this command, reboot your system. If all is right, the fglrx driver will be installed and working on your system.

Again, All of this information was jacked from http://askubuntu.com/a/126513