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I'm using a sony vaio pro 13 with linux, but unfortunately the fan is already at maximum at only 50 degrees Celsius.

How can I change the threshold it sets in?

Distro is arch btw.

  • What disro of Linux is this? – slm Nov 2 '14 at 15:42
  • The distro I use is Arch. – Nordic Nov 2 '14 at 17:04
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Everything you need should be covered in the Arch Linux wiki article titled Fan speed control.

excerpt

Once sensors is properly configured, run pwmconfig to test and configure speed control. Follow the instructions in pwmconfig to set up basic speeds. The default configuration options should create a new file, /etc/fancontrol.

You can augment the fan parameters in that config file. For example:

INTERVAL=10
DEVPATH=hwmon0=devices/platform/coretemp.0 hwmon2=devices/platform/w83627ehf.656
DEVNAME=hwmon0=coretemp hwmon2=w83627dhg
FCTEMPS=hwmon0/device/pwm1=hwmon0/device/temp1_input
FCFANS= hwmon0/device/pwm1=hwmon0/device/fan1_input
MINTEMP=hwmon0/device/pwm1=20
MAXTEMP=hwmon0/device/pwm1=55
MINSTART=hwmon0/device/pwm1=150
MINSTOP=hwmon0/device/pwm1=105
breakdown
  • MINTEMP: The temperature (°C) at which to SHUT OFF the CPU fan. Efficient CPUs often will not need a fan while idling. Be sure to set this to a temperature that you know is safe. Setting this to 0 is not recommended and may ruin your hardware!
  • MAXTEMP: The temperature (°C) at which to spin the fan at its MAXIMUM speed. This should be probably be set to perhaps 10 or 20 degrees (°C) below your CPU's critical/shutdown temperature. Setting it closer to MINTEMP will result in higher fan speeds overall.
  • MINSTOP: The PWM value at which your fan stops spinning. Each fan is a little different. Power tweakers can echo different values (between 0 and 255) to /sys/class/hwmon/hwmon0/device/pwm1 and then watch the CPU fan. When the CPU fan stops, use this value.
  • MINSTART: The PWM value at which your fan starts to spin again. This is often a higher value than MINSTOP as more voltage is required to overcome inertia.

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