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Re: case fan control

Mark Allums wrote at 2010-10-10 21:04 -0600:
> On 10/10/2010 2:53 PM, Klistvud wrote:
> >Dne, 10. 10. 2010 18:24:01 je Camaleón napisal(a):
> >
> >>
> >>I maybe wrong but AFAIK, 3-pin fans cannot be controller by ACPI (only
> >>PWM, that is, 4-pin fans can). Anyway, you can use an external fan
> >>regulator which allows you to put the fan rpm at fixed speed or you can
> >>buy a silent (low speed) fan.
> >>
> >
> >I think ACPI can cotrol 3-pin fans too -- *if* such support is built
> >into the motherboard. You probably just have to install some particular
> >package, such as lm-sensors or fancontrol or a dedicated kernel module?
> >I regret not being able to be more specific, but it's been some time
> >since I've tackled the fan controllers on my boxes. I was under the
> >impression actually that ACPI fan control worked out-of-the-box on
> >Debian, but memory may be failing me (and I don't mean RAM).
> I think fans can be /sensed/, i.e. RPM, but not /regulated/.  Three
> pin fans are +12v, ground, and sense.  (Or is it +5v? Anyway...)

Hmm, I had an Asus motherboard that had 4 fan connectors on the 
motherboard, all 3 pin.  And it could regulate 2 of the 4 fans.

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