Although I'm not entirely sure about if there's a PPA available for ATI but with Nvidia, thanks to a dedicated X-org PPA which releases a lot of X-org related drivers and utilities (proprietary ones) by default we can do this pretty easily. So unilke with the above mentioned method... you just type few command and the pre-build drivers are installed and you're ready to rock the heck out of that video game :P.
Anyhow, few days ago Nvidia released a never version of display driver series which brings few enhancements (including an interesting one for Gnome 3 users!) such as ...
*. A Gnome 3 related bug which seemed to be doing a little corruption ;-) but finally fixed.
*. Added support for Nvidia GPUs such as GeForce GTX 560, GeForce GT 545, GeForce GTX 560M, etc.
*. KDE4 desktop effect bug fixed.
*. Few issues with audio jack unplugging errors fixed.
*. Performance enhancements in KDE4.
*. New configuration named "BaseMosanic" added which lets you to easily expand a singe display screen in multiple other displays... are just a few to name.
You can install this Nvidia Driver 275.09.07 version in Ubuntu 11.10 Oneiric Ocelot & 12.04 Precise Pangolin by entering the below command in your Terminal window. Once done, make sure to do a reboot of your Ubuntu PC/Laptop as well.
sudo add-apt-repository ppa:ubuntu-x-swat/x-updatesAlthough this driver is not currently added for Ubuntu 11.04 or below ones... So, I'll update you on them once they update the packages.
sudo apt-get update
sudo apt-get install nvidia-current