Help with DSDT. Changing trip_points.

[manwe_]

Yesterday I've compiled new DSDT into kernel. This fixed few errors, primarily with usb devices. I've started to read more about and decided to change trip_point active[0] = 55*C [fan on]. I'd like to get about 70*C, to enjoy silence a little bit longer. I've no control over fan through ACPI [writing to state has no effect], echo to trip_points throws an error, only thing left is changing DSDT. But I'm unable to understand this code enough to do this. It's not easy. Intel's documentation has over 600 pages. Is there anyone who can point me which value should I change to get 70*?

Sourcecode is available here: http://acpi.sourceforge.net/dsdt/dl.php?id=890 [details: http://acpi.sourceforge.net/dsdt/view.php?id=890 ]
55 == 0x37, this value is present only in line 85 [Method (SFUN, 0, NotSerialized)] - changing this to 0x46 had no affect on trip_points. As far as I understand this code, fan control is done in Method (TCHG, 0, Serialized) [line 6642], but numbers are different than expected C degrees, and I can't figure out how to change them to achieve 70*.

Anyone?

[leszcz]

I don't know how to modify DSDT, but that's how I do it :

- boot kernel with "thermal.act=-1" parameter
- run script :

while true
do
if (( `awk '{print $2}' /proc/acpi/thermal_zone/TZ0/temperature` > 60 )); then sudo su -c "echo 0 > /proc/acpi/fan/C3BE/state && sleep 60 && echo 3 > /proc/acpi/fan/C3BE/state"; fi
sleep 60
done

[manwe_]

Option thermal.act=-1 did turn off active[0] from trip_points, but it didn't help - writing to state [ /proc/acpi/fan/FN00/state ] still has no effect. Looks like changing DSDT is the only way for me.