I’d like to point out that there’s no logical reason to use Beryl as your default window manager – except for fun and eye candy! As Ubuntu Feisty makes the task of installing Beryl very easy, I’d wanted to give it a try. So, what do we need to do?
The following is intended for Nvidia based graphic boards with GeForce XXXX chip. If you have a different graphic chip you need to install the specific drivers for your video device. It is important that those drivers support 3D acceleration.
My video card is a Gainward BLISS with GeForce 7600GT chip, so I can use the latest Nvidia driver that comes with Feisty. You may choose between Nvidia driver version 1.0-9755, 1.0-9631 and 1.0-7184. Please see this Nvidia page to check which driver version supports your video card. You’ll need at least one of the 1.0-9xxx driver versions for use with Beryl.