The fan is always on, even when the desktop is rather cool

[David J Brooks]

On Friday 15 September 2006 18:10, Wei Hu wrote:
> I have 3 systems in my desktop:
> 1) When FreeBSD runs, my desktop fans are always running, and this
> make annoy noisy.
> 2) However when Debian runs, the fan eventually stops unless I am
> performing a load intensive task.
> 3) In Windows, the fan is almost always off.
> I tried to use acpi and apm, but they are for laptop.(?)
> In Freebsd, how can I control the cooling fans or how can the system
> turns the fans off when the load is not heavy.
> Any help would be greatly appreciated.

It sounds like a broken ACPI code to me. Check the handbook chapter on 
debugging ACPI: 

http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/acpi-debug.html

David
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