thermal trip on hp nx6125

[bmiele at ipnstock.com]

Don't know if this is any use in debugging, but a recent adventure in 
trying to cvsup to 6.0-stable (story for another day) left me doing a 
iso install back to 5.4. I noticed that the 5.4 install from the original 
5.4 release cd did not have this problem. It was only after i CVSUpped 
from the 5.4 cd install to the most recent 5.x that the problem 
reappeared. Don't know what changes happened in acpi through the life of 
5.4, but it may be of some value. Interested in solving this also. apm 
allows me to keep the laptop on battery, but i get:

apm: can't open /dev/apm: No such file or directory

on any usage.

regards,

Brad

On Thu, 10 Nov 2005, Sam Leffler wrote:

> I've got an nx6125 running amd64 current.  When I take the laptop off ac I 
> get an immediate thermal shutdown from zone 2 going critical.  I traced temp 
> readings and see the following:
>
> acpi_tz0: newflags 0, temp 56.0 @ ticks 10080
> acpi_tz1: newflags 0, temp 49.0 @ ticks 10081
> acpi_tz2: newflags 0, temp 26.6 @ ticks 10088
> acpi_tz0: newflags 0, temp 53.0 @ ticks 20096
> acpi_tz1: newflags 0, temp 49.0 @ ticks 20105
> acpi_tz2: newflags 0, temp 26.6 @ ticks 20114
> acpi_tz0: newflags 0, temp 52.0 @ ticks 30123
> acpi_tz1: newflags 0, temp 49.0 @ ticks 30132
> acpi_tz2: newflags 0, temp 26.6 @ ticks 30141
> acpi_tz0: newflags 0, temp 51.0 @ ticks 35148
> acpi_tz0: newflags 0, temp 51.0 @ ticks 35185
> acpi_tz1: newflags 0, temp 49.0 @ ticks 35194
> acpi_tz1: newflags 0, temp 49.0 @ ticks 35209
> acpi_tz2: newflags 0, temp 26.6 @ ticks 35219
> acpi_tz0: newflags 0, temp 51.0 @ ticks 45229
> acpi_tz1: newflags 0, temp 48.0 @ ticks 45238
> acpi_tz2: newflags 9, temp 152.1 @ ticks 45247
> acpi_tz0: newflags 0, temp 50.0 @ ticks 55256
> acpi_tz1: newflags 0, temp 48.0 @ ticks 55265
> acpi_tz2: newflags 9, temp 152.1 @ ticks 55273
> acpi_tz0: newflags 0, temp 50.0 @ ticks 65283
> acpi_tz1: newflags 0, temp 48.0 @ ticks 65293
> acpi_tz2: newflags 9, temp 152.1 @ ticks 65301
> acpi_tz2: WARNING - current temperature (152.1C) exceeds safe limits
>
> This condition persists if I disable the shutdown call in acpi_thermal.c. 
> Once returned to ac the zone immediately returns to <30C.  I felt around for 
> a hotspot but cannot find one so figure this may be an acpi issue?
>
> I checked the mailing list archives and found almost an identical complaint 
> for an nc6230:
>
> http://monkey.org/freebsd/archive/freebsd-acpi/200509/msg00071.html
>
> I've stuck dmesg (w/ debug printfs) and output from acpidump -t -d on the 
> web:
>
> http://people.freebsd.org/~sam/nx6125.dmesg
> http://people.freebsd.org/~sam/nx6125.acpidump
>
> Any suggestions on what to look for?  FWIW the fan in zone 0 does seem to 
> kick in a fair amount even when the system is idle.
>
> 	Sam
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