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How can you remove Unity?
How to completely remove desktop?

I have installed LXDE from Ubuntu software center,(didn't install the addons i.e. chromium, GUI login manager, lxtask).

Now while logging in I have options allowing me to choose between LXDE and unity 3d and 2d ,gnome. So how do I remove all those other desktop environments and keep LXDE just like in lubuntu, but i want to keep my installed programs. I'm using 12.04LTS.

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marked as duplicate by Uri Herrera, jokerdino, Mitch, izx, jrg Aug 8 '12 at 12:13

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Do you want to remove completely, or just the options in the login screen? –  Mitch Aug 8 '12 at 8:14
To remove only Unity, Follow jokerdino's answer –  atenz Aug 8 '12 at 10:56