Quote:
Originally Posted by meaje
echo -n "65:60:50:55:50:45" > /proc/acpi/thermal_zone/THRM/trip_points
Ref: Post number 4 on topic_id=8158
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To explain further I am copying
http://http://www.geocities.com/acar...lo-1450ls.html
-- snip
ACPI
Fan
In order to have the fan managed by the ACPI system, I added the following commands to /etc/rc.d/rc.local:
# Set the trip point temperatures (in Celsius)
# the order of the fields is critical:hot:passive:active:active
echo -n "95:0:90:80:65" > /proc/acpi/thermal_zone/THRM/trip_points
# Activate the temperature control system of the kernel
echo -n "30" > /proc/acpi/thermal_zone/THRM/polling_frequency
# Turn the fan over to Kernel control
echo -n "3" > /proc/acpi/fan/FAN0/state
Make sure that you use the appropriate trip point temperatures for your laptop with "cat /proc/acpi/thermal_zone/THRM/trip_points". On my laptop, I have:
critical (S5): 100 C
passive: 90 C: tc1=2 tc2=3 tsp=100 devices=0xc1425660
active[0]: 80 C: devices=0xc1436860
active[1]: 65 C: devices=0xc14366e0
When writing to /proc/acpi/thermal_zone/THRM/trip_points, the order of the fields is critical:hot:passive:active:active. Since all fields must be present, I entered a zero for the unused 'hot' trip point. See Michael T. Kelly's Gateway 1450se page for more detail.
http://www.piratehaven.org/~mike/index.cgi?gateway
snap--
I hope this clears things up for you and shows you how to control your fans a little better and life a little easier too.
--Jeff