Comment 110 for bug 121653

For those who want a viable workaround instead of political wars I managed to make 3d + compiz fusion + gutsy + fglrx working on my T41p with ATI Mobility T2 using the following steps:

1) get 2.6.20-16-generic linux-image and linux-headers from http://archive.ubuntu.com/ubuntu/pool/main/l/linux-source-2.6.20/
2) dpkg -i install them, you will also need linux-headers-2.6.20-16 to satisfy dependencies
3) update-grub as root to get 2.6.20-16-generic to the boot menu

reboot to 2.6.20-16-generic

4) apt-get source linux-restricted-modules-2.6.22-14-generic
5) cd linux-restricted-modules-2.6.22-2.6.22.4/
6) sudo sh ./ati-driver-installer-8.37.6-x86.x86_64.run

and install the fglrx version by pressing enter and following the instructions onscreen

reboot again and you should have 3d + compiz ready

of course don't forget to apt-get install xserver-xgl