Quick instructions for trying Unity with the new beta fglrx driver.
fglrx beta driver
The latest beta version of the driver has been uploaded in the Ubuntu archive:
fglrx: Installed: (none) Candidate: 2:8.840-0ubuntu1 Version table: 2:8.840-0ubuntu1 0 500 http://archive.ubuntu.com/ubuntu/ natty/restricted i386 Packages
Take this version or a more recent one. It contains a very important bug fix to get Unity and Compiz running in fully accelerated mode. Note: this recent version of the fglrx driver is still not presented in jockey.
You will also need a recent version of Unity, like this new one in the daily build archive:
unity: Installed: 3.6.8-0ubuntu3+r1039+201103291647 Candidate: 3.6.8-0ubuntu3+r1039+201103291647 Version table: *** 3.6.8-0ubuntu3+r1039+201103291647 0 500 http://ppa.launchpad.net/unity/daily/ubuntu/ natty/main i386 Packages 100 /var/lib/dpkg/status 3.6.8-0ubuntu3 0 500 http://archive.ubuntu.com/ubuntu/ natty/main i386 Packages
Take the +r1039 or later. This version contains a workaround to let the fglrx run at full speed with Unity & Compiz.
For informations on the ppa and how to add it as a package source on your system, see https://launchpad.net/~unity/+archive/daily