Fan Speed Unknown Error

Dear members,

I have a GeForce GTX 780 on a Ubuntu 10.04 64 bit system. The 331.62 driver installation went fine and without errors and the nvidia-smi runs without problems as well, except for missing gpu_uuid and fan speed information, which list “Unknown Error” in the nvidia-smi -q output. Even though this issue is only cosmetic, I do have a real problem since gromacs md does not detect the gpu. To the best of my knowledge the detection is implemented via the nvidia-smi.

Any idea regarding the possible cause would be beneficial and i would like to thank in advance to everyone.