• More info on how to detect CPU temperatures, fan speeds and voltages using lm-sensors.
• Install and config lm-sensors first as given in the link abovẹ. Then run pwmconfig to test your fans

         pwmconfig

• If you can control fan speeds, great. Now create a file called /etc/init.d/fancontrol, and paste in the following

         #!/bin/sh
         #
         # Fancontrol start script.
         #

         set -e

         # Defaults
         DAEMON=/usr/sbin/fancontrol
         PIDFILE=/var/run/fancontrol-pid
         PATH=/sbin:/bin:/usr/sbin:/usr/bin

         test -f $DAEMON || exit 0

         . /lib/lsb/init-functions


         case "$1" in
              start)
                 log_begin_msg "Starting fancontrol daemon..."
                 start-stop-daemon --start -o -q -m -b -p $PIDFILE -x $DAEMON
                 log_end_msg $?
                 ;;
              stop)
                 log_begin_msg "Stopping fancontrol daemon..."
                 start-stop-daemon --stop -o -q -p $PIDFILE -x $DAEMON
                 log_end_msg $?
                 ;;
             force-reload|restart)
               sh $0 stop
               sh $0 start
               ;;
            *)
               log_success_msg "Usage: /etc/init.d/fancontrol {start|stop|restart|force-reload}"
               log_success_msg "  start - starts system-wide fancontrol service"
               log_success_msg "  stop  - stops system-wide fancontrol service"
               log_success_msg "  restart, force-reload - starts a new system-wide fancontrol service"
               exit 1
               ;;
        esac

        exit 0

• Make it excutable

       sudo chmod +x /etc/init.d/fancontrol

• Test it

        /etc/init.d/fancontrol start

         and

        /etc/init.d/fancontrol stop

• If it works fine, autoload it when you reboot. Insert the following line into /etc/rc.local, before "exit 0"

        /etc/init.d/fancontrol start

Content Courtesy: http://www.ubuntuguide.org
Content License:http://www.gnu.org/copyleft/fdl.htm