Comment 26 for bug 535653

Lukas, I went into system settings > Advanced >Power Management > Edit Profiles and chose the Performance profile (since my ac adapter is usually plugged in). I unchecked the "Suspend after" and "Power off after" selections under the Screen tab for my profile. I think the problem comes when the system attempts to Suspend. So far, even though my screen has gone black when I've left the system alone, I haven't had that hard freeze (knocks on wood).