system temperature too high, shutting down soon!

[Rajkumar S]

Hi,

We are using a Lanner FW-7550 running pfSense (FreeBSD 6.2). Yesterday
morning the system halted with the error

Message from syslogd at mettle-se at Tue Nov  6 10:13:45 2007 ...
mettle-se root: WARNING: system temperature too high, shutting down soon!

Sysctl values are:

# sysctl hw.acpi.thermal.tz0
hw.acpi.thermal.tz0.temperature: 51.0C
hw.acpi.thermal.tz0.active: -1
hw.acpi.thermal.tz0.passive_cooling: 1
hw.acpi.thermal.tz0.thermal_flags: 0
hw.acpi.thermal.tz0._PSV: 60.0C
hw.acpi.thermal.tz0._HOT: -1
hw.acpi.thermal.tz0._CRT: 60.0C
hw.acpi.thermal.tz0._ACx: 60.0C -1 -1 -1 -1 -1 -1 -1 -1 -1

It seems the temperature is climbing till 60C and causing the system
to reboot. I checked with manufacturer and they say the system is
certified till 70C. When I tried to raise the value of PSV, HOT and
CRT to 70, I get an error.

# sysctl hw.acpi.thermal.tz0._CRT=70
hw.acpi.thermal.tz0._CRT: 60.0C
sysctl: hw.acpi.thermal.tz0._CRT: Operation not permitted

I have posted the asl file at http://pastebin.ca/764590 if that helps.

with regards,

raj