Mind if I tag along here? I have the same problem, just on a 11.04 Ubuntu (Unity) machine. Unfortunately I am already using the 270.41.06 driver. Still, I reinstalled - which is the second time now, after an unsucessful attempt at using nouveau - but the problem persists. As I use pylotro to play Lord of the rings I have no output on the konsole. Any further ideas how I can solve this?