No matter how how hot it gets the fan stays the same. When I had a different ubuntu-based OS on it I simply followed the directions here:

http://www.thinkwiki.org/wiki/How_to_control_fan_speed

>To enable fan control, the module parameter fan_control=1 must be given to thinkpad-acpi.

>For example, in Ubuntu 8.04 (Hardy Heron), add the following to /etc/modprobe.d/options: options thinkpad_acpi fan_control=1

and then do

> echo level 7 | sudo tee /proc/acpi/ibm/fan

In Trisquel 7 however it does not work, and my X60 is always overheated. What I want is for it to be running at level 7 at all times, on boot, but in Trisquel I can't get it so even run on command. Instead I get the error

>tee: /proc/acpi/ibm/fan: Invalid argument

So how do I control the fan?