Arch Linux

blue sea & blue sail

Member

Registered: 2012-12-06

Posts: 21

[solved]Manually control the fan speed[/solved]

To enable fan control, the module parameter fan_control=1 must be given to thinkpad-acpi.

For example, in ArchLinux kernel 3.6.10, add the following to /etc/modules-load.d/thinkpad_acpi.conf: options thinkpad_acpi fan_control=1

Having done so, reboot and you can use the following commands to control fan speed:

# echo level 0 > /proc/acpi/ibm/fan (fan off)

# echo level 2 > /proc/acpi/ibm/fan (low speed)

# echo level 4 > /proc/acpi/ibm/fan (medium speed)

# echo level 7 > /proc/acpi/ibm/fan (maximum speed)

# echo level auto > /proc/acpi/ibm/fan (automatic - default)

# echo level disengaged > /proc/acpi/ibm/fan (disengaged)

If you receive a PERMISSION DENIED error you can use the following command syntax instead as a work-around:

# echo level 0 | sudo tee /proc/acpi/ibm/fan   ##(fan off)

# echo level 2 | sudo tee /proc/acpi/ibm/fan   ##(low speed)

# echo level 4 | sudo tee /proc/acpi/ibm/fan   ##(medium speed)

# echo level 7 | sudo tee /proc/acpi/ibm/fan ##(maximum speed)

# echo level auto | sudo tee /proc/acpi/ibm/fan   ##(automatic - default)

# echo level disengaged | sudo tee /proc/acpi/ibm/fan ##(disengaged) 

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Acer TM B115-P5BB | intel video card |Seagate 500G 5400rpm AF 7.5mm | 2GB RAM | 2.5 GHz Pentium N3530 CPU