Enabling compiz on ATI Mobility Radeon X600

I enjoyed compiz on my ATI graphics card during 7.10 beta. Then xserver-xorg-video.ati got updated and screen effects stopped working.

Many complaints and errors filed but no update to activate the feature.

To fix this, I opened /usr/bin/compiz (a wrapper script to start compiz) and edited the cards blacklist.

In my case I searched for my card using

$ lspci -nn | grep ATI

This gave me 1002:3150 as the card ID.

Delete this string from the blacklist (T).

Activating compiz, now works.