sudo pwmconfig
# pwmconfig revision 5857 (2010-08-22)
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.
Found the following devices:
hwmon0/device is it8712
Found the following PWM controls:
hwmon0/device/pwm1
hwmon0/device/pwm1 is currently setup for automatic speed control.
In general, automatic mode is preferred over manual mode, as
it is more efficient and it reacts faster. Are you sure that
you want to setup this output for manual control? (n) y
hwmon0/device/pwm2
hwmon0/device/pwm3
Giving the fans some time to reach full speed...
Found the following fan sensors:
hwmon0/device/fan1_input current speed: 2678 RPM
hwmon0/device/fan3_input current speed: 0 ... skipping!
Warning!!! This program will stop your fans, one at a time,
for approximately 5 seconds each!!!
This may cause your processor temperature to rise!!!
If you do not want to do this hit control-C now!!!
Hit return to continue:
Testing pwm control hwmon0/device/pwm1 ...
hwmon0/device/fan1_input ... speed was 2678 now 0
It appears that fan hwmon0/device/fan1_input
is controlled by pwm hwmon0/device/pwm1
Would you like to generate a detailed correlation (y)? Note: If you had gnuplot installed, I could generate a graphical plot.
PWM 255 FAN 2678
PWM 240 FAN 2678
PWM 225 FAN 2678
PWM 210 FAN 2636
PWM 195 FAN 2678
PWM 180 FAN 2678
PWM 165 FAN 2636
PWM 150 FAN 2678
PWM 135 FAN 2636
PWM 120 FAN 2678
PWM 105 FAN 2636
PWM 90 FAN 2636
PWM 75 FAN 2636
PWM 60 FAN 2596
PWM 45 FAN 2596
PWM 30 FAN 2518
PWM 28 FAN 2518
PWM 26 FAN 2518
PWM 24 FAN 2481
PWM 22 FAN 2445
PWM 20 FAN 2410
PWM 18 FAN 2376
PWM 16 FAN 2311
PWM 14 FAN 2250
PWM 12 FAN 2136
PWM 10 FAN 2008
PWM 8 FAN 1834
PWM 6 FAN 1607
PWM 4 FAN 1328
PWM 2 FAN 0
Fan Stopped at PWM = 2
Testing pwm control hwmon0/device/pwm2 ...
hwmon0/device/fan1_input ... speed was 2678 now 2678
no correlation
No correlations were detected.
There is either no fan connected to the output of hwmon0/device/pwm2,
or the connected fan has no rpm-signal connected to one of
the tested fan sensors. (Note: not all motherboards have
the pwm outputs connected to the fan connectors,
check out the hardware database on
http://www.almico.com/forumindex.php)
Did you see/hear a fan stopping during the above test (n)?
Testing pwm control hwmon0/device/pwm3 ...
hwmon0/device/fan1_input ... speed was 2678 now 2721
no correlation
No correlations were detected.
There is either no fan connected to the output of hwmon0/device/pwm3,
or the connected fan has no rpm-signal connected to one of
the tested fan sensors. (Note: not all motherboards have
the pwm outputs connected to the fan connectors,
check out the hardware database on
http://www.almico.com/forumindex.php)
Did you see/hear a fan stopping during the above test (n)? y
Testing is complete.
Please verify that all fans have returned to their normal speed.
The fancontrol script can automatically respond to temperature changes
of your system by changing fanspeeds.
Do you want to set up its configuration file now (y)?
What should be the path to your fancontrol config file (/etc/fancontrol)?
Select fan output to configure, or other action:
1) hwmon0/device/pwm3 3) Change INTERVAL 5) Save and quit
2) hwmon0/device/pwm1 4) Just quit 6) Show configuration
select (1-n): 6
Common Settings:
INTERVAL=10
Settings of hwmon0/device/pwm3:
Depends on
Controls
MINTEMP=
MAXTEMP=
MINSTART=
MINSTOP=
Settings of hwmon0/device/pwm1:
Depends on
Controls
MINTEMP=
MAXTEMP=
MINSTART=
MINSTOP=
Select fan output to configure, or other action:
1) hwmon0/device/pwm3 3) Change INTERVAL 5) Save and quit
2) hwmon0/device/pwm1 4) Just quit 6) Show configuration
select (1-n): 5
Saving configuration to /etc/fancontrol...
Configuration saved