Re: [ACPI-sppt] ACPI on ASUS M2N

Hi,

I tried the same thing (i2c and lm-sensors) on my M2N and got the same
results.

As far as I can see, there seems to be two solutions to the fan problem

1) Correct the DSDT to report the correct cpu temp and use this temp to
control the fan RPM's
2) somehow get ACPI to stay out of fan control. I don't know if this is
possible at all, but some of my experiments show some strange results. 

If I don't load the thermal module and boot the laptop, the fan will
turn on on at max rotations as normal. If I then reboot the machine when
the fan is on, the bios takes over (at system startup) and lowers the
fan rpm's. It is as if the bios detects that it is necessary to have the
fan on, but that the rpm's are too high.
For some strange reason, the fan is now controlled correctly (with three
states: off, low rpms and high rpms).

The high rpm state is now only reached when using alot of cpu time - e.g
kernel compiling. Also, the rpm's are lowered when the cpu beecomes idle
again.

Does anyone have any ideas why this happens ? or how I can get this
behaviour even at first boot ?


Regards,
Mads

On Fri, 2003-08-08 at 09:06, Lindsey Simon wrote:
> Well, for what it's worth, I just build and installes i2c and lm-sensors
> on my M3N and when I try to run prog/detect/sensors-detect I get:
> 
> Sorry, no chips were detected.
> Either your sensors are not supported, or they are
> connected to an I2C bus adapter that we do not support.
> 
> Has anyone found a way to send commands to start and stop the fan?
> 
> Looks like some dsdt hacking is in order - I know the dsdt I use has
> some thermal code patched, and maybe that's the cause for the 60deg
> always reporting as such.. 
> 
> Mads Paulin in message Re: [ACPI-sppt] ACPI on ASUS M2N (Wed, 08/06 14:11):
> 
> > Sounds very promissing...
> > 
> > smbus and lm-sensors ?? Please enlighten me :-)
> > 
> > Mads
> > 
> > 
> > On Wed, 2003-08-06 at 14:07, Ducrot Bruno wrote:
> > > > 
> > > > Too bad - I think we need to get the correct temps from the processor
> > > > before any new DSDT will help...
> > > > 
> > > 
> > > Seems it can be done via a classic smbus access, at least for
> > > a m2400N for which I have a DSDT.
> > > 
> > > Why not trying lm-sensors, then?
> > 
> > 
> > 
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