Re: fan control on thecus n2100

["Frank A. Kingswood" <frank@kingswood-consulting.co.uk>]

Martin Michlmayr wrote:
> * Gaudenz Steinlin <gaudenz@debian.org> [2008-01-09 11:27]:
>   
> > How can I set the fan speed manually now and how do I enable automatic
> > fan control (if possible)?
> >     
>
> I don't know which tools to use to control it automatically, but here
> are instructions for manual use:
>
>    By default, the fan should run at full speed. If you need to regulate the speed, you need to
>    locate the pwm files in /sys:
> find /sys/ | grep pwm
> /sys/devices/platform/IOP3xx-I2C.0/i2c-0/0-002e/pwm2
> /sys/devices/platform/IOP3xx-I2C.0/i2c-0/0-002e/pwm1
>
>    If you want to stop the fan, you have to write the value zero to these files:
> echo 0 > /sys/devices/platform/IOP3xx-I2C.0/i2c-0/0-002e/pwm2
> echo 0 > /sys/devices/platform/IOP3xx-I2C.0/i2c-0/0-002e/pwm1
>
>    You can activate full speed using the following commands:
> echo 255 > /sys/devices/platform/IOP3xx-I2C.0/i2c-0/0-002e/pwm1
> echo 255 > /sys/devices/platform/IOP3xx-I2C.0/i2c-0/0-002e/pwm2
>
>   
See http://www.debonaras.org/wiki/Info/N2100FanControl for a shell 
script that regulates the fan by reading system and disk temperatures. 
Fan control has only a very small control range, and the script needs to 
be tuned for that, but when that is done it works just fine.

Frank