PowerD Problem and strange cooler behaviour

[punky at gmx.ch]

> --- Ursprüngliche Nachricht ---
> Von: "Alexandre \"Sunny\" Kovalenko" <Alex.Kovalenko at verizon.net>
> An: Peter Reimer <punky at gmx.ch>
> Kopie: freebsd-acpi at freebsd.org
> Betreff: Re: PowerD Problem and strange cooler behaviour
> Datum: Sat, 15 Oct 2005 12:42:26 -0400
> 
> On Fri, 2005-10-14 at 20:23 +0200, Peter Reimer wrote:
> > >> Hello list,
> > >> 
> > >> I've two problems with my Fujitsu Siemens Amilo M 7440 and I hope
> > >> someone have an idea.
> > >> 
> > >> When I start the notebook, the cooler starts with the highest speep.
> > >> If the processor for a short time becomes warmer than 49.8°C
> > >> (2nd temperature in hw.acpi.thermal.tz0._ACx), the cooler stops. So,
> > >> after I start the notebook I compile the kernel to warm-up the
> > >> processor :) Is there another way to stop the cooler? I've already
> > >> googled around but haven't found another way yet.
> > >> 
> > >> My 2nd problem deals with powerD. When I start powerD, it takes my
> > >> whole processor power and after some seconds, it needs about 90%.
> Some
> > >> seconds later, my system crashes (without a panic). I have cpufreq
> > >> compiled in my kernel, the rest of my kernel config is as GENERIC.
> > >> 
> > >> My system is a Pentium M 1.73 GHz (perhaps Pentium 740).
> > 
> > > You did not mention your version of FreeBSD. I think, I have seen this
> > > problem in 5.x and then doing 
> > 
> > Ou sorry, 6.0 RC1 (cvsuped yesterday)
> > 
> > > sysctl hw.acpi.thermal.tz0.active=0
> > > followed by
> > > sysctl hw.acpi.thermal.tz0.active=-1
> > > was the workaround.
> > 
> > I saw the thread and I've the same problem. I can't change the value
> > of hw.acpi.thermal.tz0.active ( I tried every value between -1 and
> > 10).
> > 
> > > sysctl -a hw.acpi.thermal 
> > (http://aucupor.gmxhome.de/hw.thermal.txt)
> > 
> > hw.acpi.thermal.min_runtime: 0
> > hw.acpi.thermal.polling_rate: 10
> > hw.acpi.thermal.tz0.temperature: 38.8C
> > hw.acpi.thermal.tz0.active: -1
> > hw.acpi.thermal.tz0.thermal_flags: 0
> > hw.acpi.thermal.tz0._PSV: 85.8C
> > hw.acpi.thermal.tz0._HOT: -1
> > hw.acpi.thermal.tz0._CRT: 104.8C
> > hw.acpi.thermal.tz0._ACx: 64.8C 49.8C -1 -1 -1 -1 -1 -1 -1 -1
> > 
> > > right after boot will help as well as your ASL dump (see Handbook for
> > > directions on how to get one).
> > 
> > I've uploaded it to: http://aucupor.gmxhome.de/acpidump.txt.
> > 
> > Many thanks,
> > Peter
> > 
> > 
> > 
> > 
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> 
> Attached patch should allow you to use 
> 
> sysctl hw.acpi.thermal.tz0.active=0
> sysctl hw.acpi.thermal.tz0.active=-1
> 
> workaround.

Thanks a lot, the patch allows me to change the value, but... if I change
the value to 0 (and back to -1) , the fan continious his work, it doesn't
stop. 
 
> The problem, as I see it, is that FreeBSD assumes that your fan status
> matches your temperature, which, apparently, is not the case. I would
> recommend looking for BIOS updates if any available.

I'v already looked for a update but fujitsu siemens hasn't one yet.
 
> I will take closer look at your ASL as time permits, but not being ASL
> guru, could not promise much. Maybe someone more knowledgeable would
> chime in.

Thanks & greetings,
Peter

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