So, I finally have a "stable" version working.

I've tried Ubuntu 3.2.0-17 (pointer issue), 3.5.0-30 (network issues) and am currently running on the latest test version (3.7.0-rc3) which seems fairly stable. Network works as expected and the "reboot without screen" issue is kind of gone (I have not tested this very thorough though).

My only issue now is function keys (yup, all of them except the turn-of-screen button). Any idea of where to begin?