problem rewriting trip_points

matti3 · 11-07-2007, 03:52 PM

Hi,

every 6 seconds, i get the following in my /var/log/messages logfile:

Code:

Nov  7 21:40:18 sushi kernel: ACPI: Transitioning device [FAN] to D0
Nov  7 21:40:18 sushi kernel: ACPI: Transitioning device [FAN] to D0
Nov  7 21:40:18 sushi kernel: ACPI: Unable to turn cooling device [dffefd9c] 'on'

it is spamming my logs like..

it seems like acpi believes I have a fan in passive cool mode, while I don't, so it fails enabling that fan. My goal is to raise the passive cool mode trip point, so that my system is always in active mode. As a sort of work around, obviously.

I followed the advice in this nice acpi documentation. Unfortunately, I seem to be unable to write new trip points. Here is what I do:

Code:

# echo -n "85:0:75:55:0" > /proc/acpi/thermal_zone/THRM/trip_points
bash: echo: write error: Invalid argument

I write a critical temp, "hot" i don't have, i set the passive trip point fairly high (75), and i set my normal active cooling trip point to 55 °C. I don't have a second fan.

see my "cat /proc/acpi/thermal_zone/THRM/trip_points" output for a better view on my situation:

Code:

critical (S5):           76 C
passive:                 55 C: tc1=4 tc2=3 tsp=60 devices=CPU0
active[0]:               55 C: devices= FAN

I have the impression it is a suse specific thing, as everyone else seems to be able to write some values?

What am I doing wrong?

tia
matthias

aus9 · 11-09-2007, 07:29 AM

8.4 link example is quoted as
echo 99:80:35:75:60:55:50:45 > /proc/acpi/thermal_zone/(yourpathway)/trip_points

why try echo -n "numbers" ?

If I am right, the write error in bash is due to bad syntax.

BTW I have not tried this myself, only following your excellent link and re-looking at your first code error

matti3 · 11-13-2007, 12:59 PM

in my post, I only posted the syntax using quotes (and -n)), but in fact I tried every possible way

so also the one without quotes

I only have one thermal zone and that is THRM.

so I don't find any error in my command..

aus9 · 11-13-2007, 04:55 PM

fair enough, delete all that stuff and try
lm_sensors....it needs a kernel module for i2c but the documentation tells you how to build it and how to copy stuff into your boot up scripts