inconsistent trip_points: same hardware, different values

**stn21** · January 16th, 2011

Hi,

what is this? I have two laptops Fujitsu-Siemens Amilo M 7440, both running Ubuntu 10.10.

One shows this:

Code:

# cat /proc/acpi/thermal_zone/THRM/trip_points 
critical (S5):           105 C
passive:                 86 C: tc1=3 tc2=1 tsp=150 devices=CPU0 
active[0]:               65 C: devices= FN1 
active[1]:               50 C: devices= FN2

The other this:

Code:

# cat /proc/acpi/thermal_zone/THRM/trip_points 
critical (S5):           85 C
passive:                 74 C: tc1=3 tc2=1 tsp=150 devices=CPU0 
active[0]:               64 C: devices= FN1 
active[1]:               50 C: devices= FN2

The second one often shuts down unexpectedly, syslog says "critical temperature reached".

Obviously that is because its critical temperature is 85 C, while the other one allow up to 105 C. Where does this low "critical" value come from and how can I change it? It is really annoying if the computer shuts down right in the middle of some Makefile

THX

**gordintoronto** · January 16th, 2011

Sorry, I can't answer your question.

However, I suggest you should be asking, "how can I get the fans running so the computer does not get so outrageously hot?"

I would begin by installing lm-sensors.