Problems as of Ubuntu 12.04.1
linux kernel 3.2.0-34
Fan speed control - irratic, on-off. Usually at boot starts low. Turns on/off based on temp of 45 degree temperature, but over time sometimes fan speed ramps much higher than it should.
sleep -- screen goes off and doesn't turn back on, doesn't appear to respond to keystrokes
Hibernate --not tested
backlight control -- intel_backlight works but isn't bound to keys
wireless -- wireless key doesn't display proper state most of the time