Re: Fan speeds on HP nc6400 and nc8430

[Maciej Rutecki <maciej.rutecki@gmail.com>]

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Pieter De Wit napisał(a):
> Hi Luming,
> 
> This module was build into the kernel. After make it a module and making
> sure it's not loaded, I still see the problem. Here is a more detailed
> problem:
> 
> If I leave ACPI to manage the system, thermal zone TZ4 stays around 80
> C. The moment I turn on fan C318, this zone *shoots* up to 100 C and
> stays there, no matter what. This fan I can't turn off again.
> 
> Here is a cat of fans, thermal_zone status and temp.
> 
> status:                  on
> status:                  off
> status:                  on
> status:                  on
> status:                  on
> status:                  on
> status:                  on
> state:                   active[2]
> state:                   ok
> state:                   ok
> state:                   ok
> state:                   ok
> temperature:             65 C
> temperature:             61 C
> temperature:             54 C
> temperature:             30 C
> temperature:             100 C
> 
> This was taken during the compile of gcc. While not doing anything, the
> second zone drops to 54 C (currently at 61)

Show:
cat /proc/acpi/thermal_zone/TZ0/trip_points

or change TZ0 to TZ1

For many HP notebooks first trip point is to low. To change manually,
for example:

echo "105:100:100:78:70:60:50" > /proc/acpi/thermal_zone/TZ0/trip_points
echo 10  > /proc/acpi/thermal_zone/TZ0/polling_frequency

Then I have:
maciek@rutek:~$ cat /proc/acpi/thermal_zone/TZ0/trip_points
critical (S5):           105 C
active[0]:               78 C: devices=0xcf7aea40
active[1]:               70 C: devices=0xcf7ae9dc
active[2]:               60 C: devices=0xcf7ae98c
active[3]:               50 C: devices=0xcf7ae93c

maciek@rutek:~$ cat /proc/acpi/thermal_zone/TZ0/polling_frequency
polling frequency:       10 seconds

-- 
Maciej Rutecki <maciej.rutecki@gmail.com>
http://www.unixy.pl
LTG - Linux Testers Group
(http://www.stardust.webpages.pl/ltg/wiki/)


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