Comment 2 for bug 1617065

Update.

Today I tried, installing the fancontrol package. After running it, I get on screen:

sudo pwmconfig
# pwmconfig revision 6243 (2014-03-20)
This program will search your sensors for pulse width modulation (pwm)
controls, and test each one to see if it controls a fan on
your motherboard. Note that many motherboards do not have pwm
circuitry installed, even if your sensor chip supports pwm.

We will attempt to briefly stop each fan using the pwm controls.
The program will attempt to restore each fan to full speed
after testing. However, it is ** very important ** that you
physically verify that the fans have been to full speed
after the program has completed.

/usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed

I don't remember if there was something detected in Gnome Ubuntu 14.04 using this application, but I do remember that at least lm-sensors was able to detect the fan speed sensor.