Install gnome-session-flashback

To install gnome-session-flashback, to make your Ubuntu run on classic desktop, enter the command in Terminal:

$ sudo apt-get install gnome-session-flashback


After installed, logout your session. You can get more options of GNOME Flashback (Compiz) and GNOME Flashback (Metacity) in login. Select GNOME Flashback (Metacity) for best performance.