Re: fan control

Herbert Nachtnebel
2003-05-02T10:30:19Z

> Then, which is strange, it looked like
>
> status: off
> status: off
> status: on
> status: off
>
> when the temperature was more than 62 C and, finally

That's not strange. It's only the way the BIOS presents your devices. >From the naming of your FAN devices I see that you are using a Compaq notebook. They replace the meaningful names they use for developing with a rather strange sort of autogenerated names to obscure the interpreted ACPI source code. Linux presents all devices with the name declared in the DSDT (in contrast to the other operating system). For you it now appears that the FANs aren't sorted in the correct way.

> As a conclusion, I am now convinced that my bios is smart enough and that
> there is no risk of burning the CPU. Acpi does a good job, some report is not
> correct (same is happening with processor performance: works fine but is
> always reporting status P0).

The risk of burning the CPU is really very small. There exist a critical temprature where the system is powered off immediately. Only when the BIOS vendor has screwed the thermal zone table (oh yes, also that exists) it could happen that your CPU is burned.

Regards, Herbert.