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I recently did an update on my Ubuntu 11.04. Unfortunately I can't remember what was updated, but I am sure there were some core things.
Anyway, before that update I could change the fan speed, due it's heavy loudness, with an application called nvclock.
When I try to use it now with:
nvclock -f -F 70

I only get following reply:
Segmentation fault

So how can I get it back working, because it's really annoying loud

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up vote 1 down vote accepted

With GF6800 on Ubuntu 10.04, i have the same problem. My workaround to change GPU fan speed is:

sudo gedit /etc/X11/xorg.conf

in section "Device" add

Option       "Coolbits" "5"

Restart the PC. Then you can control fan speed with this command:

nvidia-settings -a [gpu:0]/GPUFanControlState=1

and then:

nvidia-settings -a [fan:0]/GPUCurrentFanSpeed=30

where 30 is a number from 1 to 100 % of fan speed.

You can set that two commands in Startup Applications to run at boot, remember it if your GPU overheates.


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I recently downgraded my graphics driver, so nvclock worked again. But thanks for that trick. – Dan Lee Apr 20 '12 at 10:48

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