since Ubuntu "Precise Pangolin" upgrade, my GeForce 8800 GT fan is always at 100%, it's very noisy!!!
On Ubuntu "Oneiric" I put this lines in xorg.conf:
Option "Coolbits" "4"
to enable thermal settings and control the fan.
It works great until I upgraded to 12.04:
at Xorg start, fan is at maximum speed. If I go to nvidia sttings to change the fan speed, my change are not kept when I click on "Apply":
If I try to change the fan speed in command line:
# nvidia-settings -a [gpu:0]/GPUFanControlState=1
Attribute 'GPUFanControlState' (tipingouin-home:0[gpu:0]) assigned value 1.
# nvidia-settings -a [fan:0]/GPUCurrentFanSpeed=40
Attribute 'GPUCurrentFanSpeed' (tipingouin-home:0[fan:0]) assigned value 40.
Thanks for your help.