Install ATI Catalist Graphics Driver in ubuntu 12.10 [ how to ]

After Fresh installation of Ubuntu 12.10 , you have to install graphics driver to get the most of Ubuntu .  installing graphics Driver ( ATI AMD Radeon ) is really easy you can install graphic driver either  using ..

• software source or
• download from amd site and install it.

WARNING : for old graphics card go to this page and make sure that whether your card is supported or not for unsupported cards use legacy drivers you can also verify using this page  legacy driver for unsupported cards Download 

http://www2.ati.com/drivers/legacy/12-6/amd-driver-installer-12.6-legacy-x86.x86_64.zip

1 : Installing  using software sources 

• Open Software sources
  
  
  
  
  
• click on additional drivers tab
  
  
  
• choose ati graphics from fglrx 
• and click on apply updates 
• enter your password and wait until it finish installing
  
  
  

2 : Download and Install Driver package

Download driver package : Download from here
open terminal and type

$unzip amd-driver-installer-12-9-beta-x86.x86_64.zip
$chmod +x amd-driver-installer-12-9-beta-x86.x86_64.run

or alternatively you can create installation pakage and install it using command line,
but before doing anything open Software Sources  and enable multiverse and restricted repositories click on other software and enable canonical partners

$sudo apt-get install dpkg build-essential cdbs dh-make dkms execstack dh-modaliases fakeroot libqtgui4 dpkg-dev g++ g++-4.7 

$sudo apt-get install ia32-libs-multiarch:i386 lib32gcc1 libc6-i386

$sudo apt-get install ia32-libs 

$sudo sh ./amd-driver-installer-12-9-beta-x86.x86_64.run --buildpkg Ubuntu/quantal

$sudo dpkg -i fglrx*.deb 

$sudo aticonfig --initial -f

on xorg start failure

$sudo mv /etc/X11/xorg.conf.disabled /etc/X11/xorg.conf

Done !
reboot after installation