RE: Where does Dell i8200 hide it's fans?

["Adachi, Kenichi" <aileenja-dTzOdQ2U+/YAvxtiuMwx3w@public.gmane.org>]

Hi Marco,

> I've a Dell Inspiron 8200 and I know it has two fans. The 
> Dell-laptop driver is able to switch them but I don't see 
> anything in the acpi DSDT:-( 

Likely it's because "Dell-laptop driver" directly communicates with
Thermal monitor and programs PWM FAN controller. It's not a big surprise
to see that PC vendor doesn't expose FAN control to ACPI.

 
> Another question: The Dell DSDT has some parts which work 
> differently for different Windows OS's. Since this laptop is 
> only supported with WinXP, whould it make sense to to fake 
> that even under Linux?

If you're talking about _OSI which is defined by Microsoft and not
described in ACPI spec, your attempt shouldn't make a difference in
Linux. Microsoft wants to determine which version of Windows was in BIOS
writer's mind when he/she wrote ACPI BIOS for the machine. By knowing
the targeted Windows version, they can adjust their OS's behavior and
keep the compatibility for the end user's sake. For more details, please
take a glance at the following white paper:
http://www.microsoft.com/hwdev/tech/onnow/_OSI-method.asp


Thanks,
- Adachi, Kenichi




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