[gentoo-ppc-user] OT: thermal management diff 2.4 vs. 2.6

2005-06-28 Thread Alexander Meyer
Hi list,

since i dont't know where else to ask this question i figured i might as
well ask it here.
i'm running gentoo on my tibook 550 (powerbook3,3 that is in
kernelspeak) and noticed that with a 2.4 kernel as well as under macos
the fan hardly ever kicks in, even when the computer gets quite hot
while with the 2.6 kernel the fan wouldn't stop running.

while this aproach is probably bying me some more lifetime for my
computer, it is seriously annoying not to have at least an occasional
moment of silence when sitting in front of the box.

i already tried searching the kerneltree for suspicious expressions like
fan.*control and such but so far without success (meaning i found only
acpi-related stuff).

can someone please give me a hint where else to look or even where else
to ask this question? any help is appreciated!

thanks in advance and best regards,

alexander



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Re: [gentoo-ppc-user] OT: thermal management diff 2.4 vs. 2.6

2005-06-28 Thread Stefan Bruda
At 19:27 +0200 on 2005-6-28 Colin Leroy wrote:
 
   As far as I know the fans are hardware controlled on these models, so
   the fans should not be affected by a kernel change... except that they
   do just that.  Must be grmelins in there or something.
  
  echo 10  /sys/devices/temperatures/limit_adjust if you want the fans
  to kick in at 60°C instead of 50°C.

These are Tibooks (as opposed to newer Alubooks) so they do not have
software temperature control, no?

Stefan

-- 
If it was so, it might be; and if it were so, it would be; but as
it isn't, it ain't.  That's logic.
--Lewis Carroll, Through the Looking-Glass

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Re: [gentoo-ppc-user] OT: thermal management diff 2.4 vs. 2.6

2005-06-28 Thread Stefan Bruda
At 21:03 +0200 on 2005-6-28 Colin Leroy wrote:
 
   These are Tibooks (as opposed to newer Alubooks) so they do not have
   software temperature control, no?
  
  mmh, I'm not sure right now. Try to load the therm_adt746x module. If it
  fails to load, you're right :)

Oh, of course therm_adt746x won't load, sorry for not mentioning it.
There is as far as I know no option in the kernel config for thermal
management on these machines.  I am clueless as to why is the fan
behaving differently, it simply shouldn't.

Stefan

-- 
If it was so, it might be; and if it were so, it would be; but as
it isn't, it ain't.  That's logic.
--Lewis Carroll, Through the Looking-Glass
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Re: [gentoo-ppc-user] OT: thermal management diff 2.4 vs. 2.6

2005-06-28 Thread Carl Hudkins
On Tue June 28 2005 16:34, Stefan Bruda wrote:

 Oh, of course therm_adt746x won't load, sorry for not mentioning it.
 There is as far as I know no option in the kernel config for thermal
 management on these machines.  I am clueless as to why is the fan
 behaving differently, it simply shouldn't.

 I'm not an expert here, but could it be the kernel is not using some kind of 
CPU idling when it's not busy?  Maybe the CPU is actually running hotter than 
it used to.  Just an idea, may not be founded in fact.  ;)

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