I’ve been working on a complete guide to installing Ubuntu on a MacBook, part of which includes a customized xorg.conf to offer right-click, double-tap, scrolling and other such functionality. In a release-early, release-often mindset I wanted to post my config now. If you run Ubuntu on a macbook this might be helpful. If you have any suggestions to add I would appreciate hearing about those as well.
Ooh, if you’re running on a MacBook Pro there is a similar config for that hardware available here.
Remember, before you update *any* of your xorg.conf it is *always* a good idea to back it up. The last thing you want is a b0rk3d graphical server with no revert options. (sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf-date).
…and if you read this far you can view / download my xorg.conf here:
The main magic is in the Section “Input Device”.