In ubuntu, you have a variety of window managers to choose from. Though Ubuntu 12.04 comes with Unity as the default you can switch back to Gnome, or choose other managers like Cinnamon.
If you want to know, which window manager you are running currently
echo $XDG_CURRENT_DESKTOP # tells you what window manager you are running
echo $GDMSESSION # tells you what option you've selected from login screen
Posted by Sandheep to Sandheep's deck (2013-05-09 10:33)