Re: [Bugme-new] [Bug 9155] New: No fan control with ATI Radeon display support on HP nx6125.

["Daniel Würfel" <daniel.wuerfel@gmx.net>]

Am Sonntag, den 14.10.2007, 21:55 +0200 schrieb Rafael J. Wysocki:
> On Sunday, 14 October 2007 16:18, Daniel Würfel wrote:
> > Am Sonntag, den 14.10.2007, 16:02 +0200 schrieb Rafael J. Wysocki:
> > > On Sunday, 14 October 2007 09:26, Daniel Würfel wrote:
> > > > Hi there,
> > > > 
> > > > at first great respect for your fast answers. 
> > > > I don't think, that the binary ati driver is the problem, because:
> > > > 1. with switched of "ati radeon display support" in the kernel, the fan
> > > > control works correctly (and i still using the ati-driver)
> > > 
> > > How do you know, however, that the "ati radeon display support" in the kernel
> > > does not interfere with the ATI driver in a destructive way?
> > 
> > I think, but im not sure, that the ati driver is loaded, if X was
> > started. But at this moment X was not started.
> 
> Well, the kernel module part is probably loaded earlier.
>  
> > > > 2. the fan starts spinning at the boot screen even if the radeon display
> > > > driver was loaded (and the ati driver is not just loaded yet).
> > > 
> > > I'm not sure what you mean exactly.  Can you clarify, please?dann
> > 
> > Well, i see it looks a little bit confused what i wrote. What i mean is,
> > that the fan at this time starts to rotate, when the "radeon display
> > support" is loaded at boot time.
> 
> I see.
> 
> Can you please check:
> - What happens if you don't use the ATI driver at all (please unload its kernel
>   module before loading the kernel's radeon one)?
> - Does the loading of the radeon module trigger the fan automatically?
> - What happens if the fan module is not loaded at that time?

I think i got the problem:
I made some test. The problem is the module radeonfb. If i compile
radeonfb as a module there is no problem with the fan control. But if i
compile it into the kernel, than fan control will be destroyed and the
fan doesn't stop working from the beginning of the system start. 
The other modules (fglrx, agp_gart) have no influence to the fan
behaviour.


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