fan control

[Emmanuel Dreyfus <manu%netbsd.org@localhost>]

Hello

I have a machine that seems unable to control its fan, either during boot
or once NetBSD is booted.

envstat reports it runs cool, but the fans blow at full speed. Beyond the 
annoying noise, fans die early, and vibrations make life difficult for
mechanical hard drive.

Is there any way to control fans through ACPI? acpi(4) says "The acpifan 
driver does not support controlling the fan", but is it something that
needs to be implmented, or is it not possible?

-- 
Emmanuel Dreyfus
manu%netbsd.org@localhost