Re: Powerbook G4 getting very hot. Solution?
On Fri, 18 Jul 2003, Pander wrote:
[ ... ]
> Wolfgang Pfeiffer wrote:
> >So my simple question: will, or can, this situation change after
> >installing a fresher kernel? Or other software?
> >
> My guess is that the fan isn't on as often as it is in OSX, I don't know
> where the control for this is.
On Debian, the fan, once it starts running some minutes after booting the
machine, never stops running until I shut down Linux. The fan's running at
low speed, always. Contrary to Mac OS X, where fan speed is changing from
time to time, IIRC, from "low" to "high" speed, and probably vice versa.
And, again IIRC, in OS X it sometimes even stops running completely for
some time ...
>
> >
> >I'm getting nervous because the metal around the ethernet jack has become
> >darker (not black, but darker), looks like the result of heat there. As
> >far as I can see: This is the only place where the metal case has become
> >dark on the outer surface of the case. I didn't have a look at the inside
> >of the machine in the last few weeks ..
I'm not so sure anymore whether the darker metal near the ethernet jack is
the result of too much heat there: Yesterday, after having shut down
Linux/the machine after several hours, the case bottom side was very warm
as usual. I removed the ethernet cable, touched the metal near the jack
where it was plugged in, and I didn't have the impression this area was
very warm or even hot ...
[ ... ]
>
> >
> >Solution? Or none?
> >
> at power-save speed it doesn't produce as much heat as in full-speed
> mode. I've written this 'deamon' to control it.
>
> cpu-full-speed
>
> #!/bin/sh
>
[ ... ]
>
> What would be nice is that this thing would go (automatically) to
> full-speed as early as possibly when you boot, then after booting set it
> (automatically) to power-save. Then it should be so that the user can
> set it to full or power save when he or she wants. This is good for
> saving power when travelling and controlling the heat on this thing. In
> winter the heat is not so much a problem as in sommer.
I have a 867 MHz machine because I *want* the machine running at that
speed automagically. So it's okay if it slows down if there's no reason
to run at full speed. But only then slow speed is okay.
So usually I want the machine to run at full speed if this helps
getting things done faster ...
And that's why I'm not so sure whether slowing down speed is such a good
solution ...
At
http://cattlegrid.net/~christophe/titanium
I read:
"The default woody was fine but the laptop was getting hot fast especially
during my succesive tries to get X working. So I early upgraded my
kernel."
The author didn't say explicitly something on the result of the kernel
upgrade, or at least I didn't read about it. But at any rate I'll try this
solution ...
[ ... ]
Thanks to all of you for your postings.
Best Regards,
Wolfgang
--
Profile, Links:
http://profiles.yahoo.com/wolfgangpfeiffer
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