[lm-sensors] Fan control with Winbond W83627EHF

[lm-sensors] Fan control with Winbond W83627EHF

[Kjeld Flarup]

Hello

I have an ASUS A8V-E SE Motherboard with a Winbond W83627EHF chip. Im 
running kernel 2.13
I got lm_sensors detect the fan speed now, but the pwmconfig script fails.
As far as I can see it is because there are no fan1_pwm devices created 
by the driver.

I only got these devices with these current values:
fan1_div:8
fan1_input:1360
fan1_min:1205
fan2_div:8
fan2_input:1834
fan2_min:1704
fan3_div:4
fan3_input:1360
fan3_min:0

_div & _input is readonly, while I can write to _min. But writing to _min does not seem to have any efect.

Is it possible to control the fan with the above or does the drivers miss something?

If the drivers are missing something, then I'm willing to code whats needed if I can get some hints.

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[lm-sensors] Fan control with Winbond W83627EHF

[Grant Coady]

On Wed, 28 Sep 2005 22:44:51 +0200, Kjeld Flarup <kjeld.flarup@liberalismen.dk> wrote:
>
>I have an ASUS A8V-E SE Motherboard with a Winbond W83627EHF chip. Im 
>running kernel 2.13
>I got lm_sensors detect the fan speed now, but the pwmconfig script fails.
>As far as I can see it is because there are no fan1_pwm devices created 
>by the driver.
>
>I only got these devices with these current values:
>fan1_div:8
>fan1_input:1360
>fan1_min:1205
>fan2_div:8
>fan2_input:1834
>fan2_min:1704
>fan3_div:4
>fan3_input:1360
>fan3_min:0
>
>_div & _input is readonly, while I can write to _min. But writing to _min does not seem to have any efect.

fan?_min is not a speed control, it is a low speed alarm setpoint.
>
>Is it possible to control the fan with the above or does the drivers miss something?
Controlling fan speed is a different issue, no pwm means the speed 
control is not available (yet).  Check your mobo, I have a similar 
Winbond chip on a Sempron SktA mobo but no fan speed control hardware.
>
>If the drivers are missing something, then I'm willing to code whats needed if I can get some hints.
If you dual-boot windows you can get a second opinion on hardware 
with SpeedFan <http://www.almico.com/speedfan.php>, particularly 
if fans are controllable.

Read up on lmsensors site docs, the chip datasheet, and have a go.
People here will help.

Cheers,
Grant.