ASUS P5B DELUXE WiFi with Winbond W83627DHG

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Hi David,

I found out: if the lower fan limit is too high, i do have this effect.
when I lowered the _min value. it works correctly.

.. still working on how to control fan 2 and 3 .... does not work yet

christian


Am Donnerstag, 2. November 2006 11:00 schrieb Christian Mahr:
> ..2nd try
>
> Hi David
>
> I am still researching on the fans on the asus board.
>
> One problem I came across:
> for fan5 the reading drops sharply from about 1325 rpm to zero when I lower
> the voltage. Note the fan is definitely moving still, the fan physicall can
> do much slower.
>
> fan5_div shows 4 and does not step up as with fan 1 and 4 where I can see
> _div on 128.
>
> fans 1,4 and 5 seem all to be controlled by pwm4 on this board.
>
> to my understanding fan5 should behave as the others and step up the
> divider when lowering the voltage, isn?t it?
>
> Best regards
> ????????Christian
>
> Am Montag, 30. Oktober 2006 00:12 schrieb David Hubbard:
> > Hi Christian,
> >
> > > Sorry, I should have explained. The CPU-Fan connector on the P5BDeluxe
> > > Wifi is a 4-pin, but my CPU-Fan itself has only 3 pins. As I tried to
> > > use the marked 3 pins(the 3-pin connector still fits into the 4 pin) I
> > > could not control the speed via the Bios (this is probably the purpose
> > > of the 4th pin on a 4 pin connector?) --> it stayed on a somewhat noisy
> > > speed.
> > >
> > > So I decided to use one of the 3-pin-CHA1_FAN-connector (all other Fan
> > > connectors do have 3 pins) for the CPU-fan and tried this one instead
> > > --> it works. All calm cool and quiet now.
> >
> > Okay, your sensors.conf will be different from the "standard" one for
> > this motherboard, because you map the CPU fan to a different fan
> > number.
> >
> > > This is pretty neat as the Bios apparently cannot handle this
> > > correctly. If the speed is below, say, 700 rpm or so, the Bios (when
> > > the "FAN page" is opened) becomes very slow and behaves strange
> > > sometimes.
> > >
> > > Is this a "auto-div" function of the chip or the driver?
> > >
> > > Does this mean you do not need to set it in the sensors.conf ? This
> > > should be mentioned later specifically in the comments in sensors.conf,
> > > isn?t it?
> >
> > You don't need to set the divs. In fact, I don't think you can. The
> > driver does the div scaling.
> >
> > > Interestingly enough the "sys" is very close to "CPU" in temperature
> > > wheras Bios shows 7 degrees more for the CPU (???).
> >
> > The "sys" temperature is measured inside the W83627DHG. You can test
> > this, if you like, by chilling a large metal object and then holding
> > it to the chip. But your chip may be integrated with the rest of the
> > chipset. Your mileage may vary.
> >
> > > Question:
> > >
> > > Which CPU sensor is meant here? The Core2Duo has got 2 of them
> > > internally (see coretemp driver) - is this a 3rd one?
> > >
> > > > The AUX temp may need to be configured correctly. Can you see any
> > > >
> > > > variation? It may also be that the pin on the chip is not connected
> > > > to
> > > >
> > > > anything, and just floating.
> >
> > The AUX temperature input is a pin on the W83627DHG which measures the
> > voltage from a thermal diode or thermistor. It is up to the
> > motherboard manufacturer to decide whether to connect it to a sensor,
> > or leave it floating. I don't know what it is measuring. The coretemp
> > driver measures the temperature of your CPU using a completely
> > different interface, and is not related to temperatures reported by
> > the W83627DHG.
> >
> > David
>
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