Re: Critical temperature even when idle with 2.6.7+patch, works fine in 2.4.26

["Ville Pätsi" <drc-gbHDUNYU5Z6UJGkj1VpxcA@public.gmane.org>]

These 1.8K bytes were from Keld Jørn Simonsen,
> On Fri, Jul 02, 2004 at 12:48:47PM +0300, Ville Pätsi wrote:
> > I have an Acer TravelMate 233xc laptop. The system cooling isn't handled
> > by ACPI. The system works fine in 2.4.26 and with moderate fan speed
> > (judged by the sound) the system stays at around 60 degrees celcius.
> > 
> > When I boot into 2.6.7 (with the 2004-06-21 patch) the system starts to
> > heat up, atlest judging from /proc/acpi/thermal_zone/THM0/temperature .
> > The fan also gets faster. The system load is basically none (No X
> > running). Then the system reports it has reached the critical
> > temperature of 80 degrees and shuts down. 
> > If I try to start the machine too soon after it does an emergency
> > shutdown (instant power off) while the kernel is loading, so I guess
> > it's not a temperature measurement error.  I don't have cpufreq running
> > and /proc/cpuinfo reports 2.0GHz (which is the normal).
> 
> I have the same problem on an Acer Travelmate 233 XC (same model).
> The system gets really heated under kernel 2.6.7, while under 2.6.3 it
> runs much cooler. Also I see from metering power consumption that 
> it seems like the CPU does not do idle looping. It does not reach 80
> degrees, but something like 65 degrees is common, while on 2.6.3 the
> system stays about 48 degrees. I run X on the system, but the system is
> quite idle.

In 2.6.7 I looked at /proc/acpi/processor/CPU/power and saw that it was
in mode C3 (which is supposed to be the least power consuming mode?). In
2.4 I've only seen it in C2.



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