Switching Desktop Environments

If you decide you want to try a different desktop environment, the Desktop Switcher provides a graphical means of changing your desktop environments between KDE, GNOME, and several different window managers (including TWM). To open the Desktop Switcher, select System Preferences More Preferences Desktop Switching Tool.

From the Desktop Switcher, select the desktop environment (GNOME or KDE) or window manager (TWM) you want to use next. You can have that change apply to the current display (just the next time you restart X only) or make the change permanent. Click OK. Then log out. The next time you log in, the new environment or window manager will take effect.

Note 

To use the Desktop Switcher window, you must have the switchdesk-gui package installed. Otherwise, you can use the switchdesk command, followed by the name of the Desktop you want to switch to, from a Terminal window to change your Desktop.

If you just want to change your desktop environment temporarily, you can select Session from the login screen and choose the desktop you want. You can choose it just for the current session or to have it be your default desktop.