The computer I am using is a Dell 1525n which has an Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller. After my initial install of Jaunty Jackalope beta all was well, the graphics card was detected and Compiz enabled. This however was short lived as some days later I applied some updates and Compiz could no longer be enabled.

On investigation I discovered that Compiz had ‘blacklisted’ my video card. I have yet to find out why because Compiz has worked without complaint on every version of Ubuntu since Gutsy Gibbon.

I was initially gutted and planned to downgrade to Intrepid, but not to be defeated I did some searching and found out that you can force Compiz to skip the black list checks. To do this you need to create the following file:-

~/.config/compiz/compiz-manager

and add the following line:-

SKIP_CHECKS=yes

After this I was then able to enable Compiz and continue working as I have done for the last year or so. So far I have not seen any issues, so it is still a mystery as to why the GM965/GL960 was blacklisted.

I hope this helps somebody!