Re: Powerbook G4 getting very hot. Solution?
Hi Wolfgang,
Wolfgang Pfeiffer wrote:
Hi all,
this might be a topic that's been discussed here already before: But what
I found on Google on the subject, IIRC, didn't say anything on whether
there is a *solution* for the problem. Or isn't there any?
I had the same question and problem.
What I have:
Kernel: 2.4.18-newpmac
2.4.21-ben2
Hardware:
Powerbook3.5 (version = 3.2)
867 MHz
768 MB SDRAM
The problem is the machine is getting very hot at the bottom side of the
metal case when running Linux. It does not get that hot under Mac OS X.
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.
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 ..
And one message from this forum some time ago, if I recall it correctly,
clearly said that heat can become dangerous for hardware ...
or your own personel hardware, watch out that you don't burn your
private parts, haha
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
#
# manage CPU clock frequency
set -e
CPU_INFO=/proc/cpuinfo
CPU_FREQ=/proc/cpufreq
if [ -f $CPU_INFO -a -f $CPU_FREQ ]
then
case `awk '$1 ~ /detected/ {print $4}' $CPU_INFO` in
287)
# 287 (PowerBook G4 12")
case "$1" in
start)
echo -n "0%100%100%performance" > $CPU_FREQ
echo -n "CPU clock frequency at full-speed: "
awk '$1 ~ /clock/ {print $3}' $CPU_INFO
;;
stop)
# 0%0%0 results in 0%61%61
echo -n "0%0%0%performance" > $CPU_FREQ
echo -n "CPU clock frequency at power-save: "
awk '$1 ~ /clock/ {print $3}' $CPU_INFO
;;
status)
echo -n "CPU clock frequency at "
if [ -z "`grep "(100 %)" $CPU_FREQ`" ]
then
echo -n "full-speed: "
else
echo -n "power-save: "
fi
cat $CPU_INFO | grep clock | awk '{print $3}'
;;
*)
echo "Usage: /etc/init.d/cpu-full-speed
{start|stop|status}" >&2
exit 1
;;
esac
;;
*)
exit 0
;;
esac
fi
exit 0
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.
But I'm also looking for a way to increase fan activity on this machine.
Bye,
Pander
Thanks in anticipation.
Best Regards
Wolfgang
Reply to: