Re: Changing temperature trip points

Dominik Brodowski
2002-11-03T20:30:10Z

Hi!

On Sun, Nov 03, 2002 at 09:21:30PM +0100, Pavel Machek wrote:
>
> Hi!
>
> > Actually, I think the problem is something else: The BIOS is supposed to
> > generate ACPI events whenever these trip points are reached. So if you
> > change these values (by patching the DSDT, by "hardwiring" it into the
> > kernel) you need to use the polling method. Then ACPI will compare the
> > current temperature to the specified temperatures with a specified
> > frequency. Any chance you can try whether my assuption is correct?
>
>
> YOU are right that I need to turn the polling on.
>
> But I'm sure fan is done by bios on my machine.

Yes, that might well be - the fan on my machine turns on and off both when
it thinks it should, and when ACPI tells it should *weird*

Actually, I think any write into trip_points should automatically enable
the polling mode. Will submit a patch which does that later. Do 3 seconds
sound sane?

Dominik