edit /usr/bin/compiz and do 2 searches for intel then comment out the following line
T=”$T 8086:2982 8086:2992 8086:29a2 8086:2a02 8086:2a12″Â # intel 965
This line blacklists the i965gm x3100 graphics chipset from compiz due to video playing problems (and sure enough, you cannot play videos with Compiz active).
Then from the menu, select System->Preferences->
You can also install the compizconfig-settings-manager module to enable even more insane desktop effects.