HOW TO install alternate display managers (KDE, XFCE, iceWM)
It is very simple to install KDE or XFCE in Ubuntu. To install KDE just run terminal (Alt+F2 then type 'gnome-terminal') and write:
sudo apt-get install kubuntu-desktop
During installation you will be asked about setting your default display manager. If you are just checking out KDE select GDM here.
To instal XFCE open terminal and write:
sudo apt-get install xfce4
To change the display manager you need to log out. On log in screen click on 'Options' in lower left corner and select 'Select Session'.
Depending what display manager you want to use select either KDE or XFCE. Then type your username and password and when you login you will be asked about setting the default display manager. Again, if you are just checking KDE or XFCE select 'Just For This Session'.
That's all. There is also another display manager you would want to check out. It's called iceWM and you can install it by typing the following in terminal:
sudo apt-get install icewm
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