Re: fan control

Ok, four trip points, four FAN "devices"/states, lowest one at 40 deg. 
You told us that your lowest temperature is about 50 deg. Hence the last one
should be on and you don't see it => something to investigate.

In this moment:

$ cat /proc/acpi/thermal_zone/TZ1/temperature
temperature:             50 C

$ cat /proc/acpi/fan/FAN*/state
status:                  on
status:                  off
status:                  off
status:                  off

(I changed the name of the fans to the more readable FAN[0-3], OK?)

This is correct.
If I  echo -n 3 > /proc/acpi/fan/FAN0/state

then the fan stops.
After reaching the second trip point, the fan starts up and I have the
following status report

$ cat /proc/acpi/fan/FAN*/state
status:                  off
status:                  on
status:                  off
status:                  off

This is what is strange.

What hardware are you using?

Compaq Evo N800v

Cheers,

Daniele


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