Here’s what I did to get the Macbook Pro (rev 3,1) running smoothly under Ubuntu 9.04.

Turn on the nvidia drivers with jockey-gtk (the hardware drivers manager).

Add the keys for the mactel PPA: cr:code sudo apt-key adv –recv-keys –keyserver keyserver.ubuntu.com 0x8db7f87a2b97b7b8 </cr:code>