Since 12.04 I am getting complete system freezes, what means i can't do anything except press & hold the PowerButton until my machine powers off. It seems to be connected with Jupiter because the freezes appear more often when is set the performance mode to "PowerSaving" or the battery is low. I haven't found another connection yet.
Please tell me which logs would be helpful.
I'm running Ubuntu 12.04, with Unity on an Asus U36SD.