gistfile1.txt

evan@caron:~$ cat /etc/modprobe.d/ibm.conf 
options thinkpad_acpi fan_control=1
evan@caron:~$ cat /etc/pm/power.d/ibm_fan 
#!/bin/sh

fan="/proc/acpi/ibm/fan"

[ -w "$fan" ] || exit $NA

case "$1" in
    true) echo level auto > "$fan" ;;
    false) echo level disengaged > "$fan" ;;
    *) exit 254 ;;
esac