Comment 18 for bug 1239183

For me, 11.10 doesn't boot to x, but to a terminal. Using the 'startx' command brings up a normal ubuntu session. The backlight works in this version, but the brightness buttons don't and I couldn't immediately see where to change brightness so couldn't test if the screen just had one brightness setting or if it is controllable.

I guess kernel bisecting would need to start from 11.10 then, but I have to admit that I don't know how to do this, especially from a liveUSB.