Fan control for new PowerMac G5 2.7GHz machines?

[Geoff Levand]

Benjamin Herrenschmidt wrote:
>>Can anyone shed some light on the fan support for these new machines?
>>Am I just doing something simple wrong or missing something obvious?
> 
> 
> I though it was "just working" but maybe I'm wrong ... Have you tried a
> 2.6.12 upstream kernel ?
> 
> Ben.

It doesn't work for me with 2.6.12.3.  Any clue as to what's wrong?

-Geoff