Possible Duplicate:
How can you remove Unity?
How to fully remove Unity Desktop Environment and associated files and dependencies from Ubuntu 12.04 and have a pure KDE installation ?
Possible Duplicate:
How can you remove Unity?
How to fully remove Unity Desktop Environment and associated files and dependencies from Ubuntu 12.04 and have a pure KDE installation ?
From the terminal: sudo apt-get remove unity*
and then sudo apt-get autoremove
so nothing stays, then proceed to Install KDE sudo apt-get install kubuntu-desktop
.
kubuntu-desktop
and do not bother about the presence of Unity. But if you really want a pure and hard KDE, make a complete new Kubuntu install from a cd/usb – Aug 27 '12 at 13:14