Up. I don't want to start a new thread, but this issue is still here. Ubuntu 12.04.1, Alienware m15x. pwmconfig gives this error :
/usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed
So I can't run fancontrol
Loading configuration from /etc/fancontrol ...
Error: Can't read configuration file
Is there any other way?

I followed this guide.

I really like Ubuntu : it is faster and smoother and better than Windows in everything that is not playing ( for that I boot Windows ). Having to return to it for a cooling issue would be very sad...