You must also enable manual control for your fans. You are required to have the Linux kernel with 'thinkpad-acpi' patch. This program is written in C, using GTK GUI. This is program for controlling fans speed on IBM/Lenovo ThinkPads. Packages are available for debian based linux systems.Ī GTK GUI program (packaged for Ubuntu 7.10 and 8.04) may also help.Īutomated program - Simple ThinkPad Fan Control There is an distro independent daemon ( ), written in python. For the default behavior, simply save tp-fancontrol ( download) as tp-fancontrol, make sure you've loaded thinkpad-acpi with the "fan_control=1" parameter, and run: It monitors the laptop's thermal sensors and sets the fan speed accordingly, according to customizable thresholds. # echo level disengaged | sudo tee /proc/acpi/ibm/fan (disengaged)Īn ACPI fan control script can be used to override the firmware's fan algorithm with gentler, quieter version. # echo level auto | sudo tee /proc/acpi/ibm/fan (automatic - default) # echo level 7 | sudo tee /proc/acpi/ibm/fan (maximum speed) # echo level 4 | sudo tee /proc/acpi/ibm/fan (medium speed) # echo level 2 | sudo tee /proc/acpi/ibm/fan (low speed) # echo level 0 | sudo tee /proc/acpi/ibm/fan (fan off) If you receive a PERMISSION DENIED error you can use the following command syntax instead as a work-around:
# echo level disengaged > /proc/acpi/ibm/fan (disengaged) # echo level auto > /proc/acpi/ibm/fan (automatic - default) # echo level 7 > /proc/acpi/ibm/fan (maximum speed) # echo level 4 > /proc/acpi/ibm/fan (medium speed)
# echo level 2 > /proc/acpi/ibm/fan (low speed) # echo level 0 > /proc/acpi/ibm/fan (fan off) Having done so, reboot and you can use the following commands to control fan speed: To enable fan control, the module parameter fan_control=1 must be given to thinkpad-acpi.įor example, in Ubuntu 8.04 (Hardy Heron), add the following to /etc/modprobe.d/options: options thinkpad_acpi fan_control=1įor Debian Squeeze (testing) create /etc/modprobe.d/thinkpad_nf with: options thinkpad_acpi fan_control=1 and install the package thinkfan Fan control operations are disabled by default for safety reasons.
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