Comment 265 for bug 22336

I'm using 8.10 32 bit edition, but my CPU is a 2.0 Dothan, so power management is done by acpi-cpufreq instead of powernow_k8.

$ lsmod | grep cpufreq
acpi_cpufreq 15500 0
cpufreq_userspace 11396 0
cpufreq_stats 13188 0
cpufreq_powersave 9856 1
cpufreq_ondemand 14988 0
freq_table 12672 3 acpi_cpufreq,cpufreq_stats,cpufreq_ondemand
cpufreq_conservative 14600 0
processor 42156 3 acpi_cpufreq,thermal

My /proc/acpi/thermal_zone/ has a THRM directory, not THRC, and it contains:

$ cat cooling_mode
<setting not supported>

$ cat trip_points
critical (S5): 100 C

$ cat polling_frequency
<polling disabled>

Adding "options thermal tzp=30 act=0 crt=0 psv=0" to /etc/modprobe.d/options does not change this value after reboot, it keeps showing "<polling disabled>", but one time I have managed to unload module thermal and reload it with these parameters, it showed "3 seconds". Anyway it does not work, and it shuts down when it reaches critical trip point.

Now I'm trying to repeat test but I can't unload thermal, because it says it's in use.

Any hint?

My kernel is 2.6.27-20-generic, but thermal module shows the same info:

spock@vulcan:/proc/acpi/thermal_zone/THRM$ modinfo thermal
filename: /lib/modules/2.6.27-10-generic/kernel/drivers/acpi/thermal.ko
license: GPL
description: ACPI Thermal Zone Driver
author: Paul Diefenbaugh
srcversion: 1787CE9FEB053C917D031A9
alias: acpi*:LNXTHERM:*
depends: processor
vermagic: 2.6.27-10-generic SMP mod_unload modversions 586
parm: act:Disable or override all lowest active trip points. (int)
parm: crt:Disable or lower all critical trip points. (int)
parm: tzp:Thermal zone polling frequency, in 1/10 seconds. (int)
parm: nocrt:Set to take no action upon ACPI thermal zone critical trips points. (int)
parm: off:Set to disable ACPI thermal support. (int)
parm: psv:Disable or override all passive trip points. (int)

Cheers.