Open the terminal and run the following commands
sudo apt-get install ppa-purge sudo ppa-purge ppa:gnome3-team/gnome3 sudo apt-get install gnome-session
Open the terminal and run the following commands
sudo apt-get install ppa-purge sudo ppa-purge ppa:gnome3-team/gnome3 sudo apt-get install gnome-session
Open the terminal and run the following commands
sudo add-apt-repository ppa:gnome3-team/gnome3 sudo apt-get update sudo apt-get dist-upgrade sudo apt-get install gnome-shell
http://www2.ati.com/drivers/linux/ati-driver-installer-11-5-x86.x86_64.run
sudo sh ati-driver-installer-11-5-x86.x86_64.run --buildandinstallpkg Ubuntu/natty