As I discussed in this question, for some reason, Metacity was used instead of Compiz even with capable GPU and driver. I want to set the preference to use Conmpiz wherever possible, is there a way?
Here is something you might want to try...from a terminal (CTRL+ATL+T):
Find the line listed as
and change it to
This is something I had done in versions earlier than Ubuntu 11.04. I do not recall having to change anything else to get compiz to replace Metacity by default.