NAME

       thinkfan - A simple fan control program

SYNOPSIS

       thinkfan [-hnqzD [-b BIAS] [-c CONFIG] [-s SECONDS] [-p [DELAY]]]

DESCRIPTION

       Thinkfan can use temperature inputs and one PWM control file in /sys/class/hwmon or the Thinkpad-specific
       thinkpad_acpi interface in /proc/acpi/ibm. If nothing is specified, it tries to use /proc/acpi/ibm.

       WARNING:  This program does only very basic sanity checking on the configuration. That means that you can
              set your temperature limits as insane as you like.

       Thinkfan has two modes of operation:

   SIMPLE MODE
       In simple mode, it uses only the highest temperature found in the system. That may be dangerous, e.g. for
       hard disks.  That's why you should provide a correction value (i.e. add 10-15 \[u00B0]C) for  the  sensor
       that  has  the  temperature  of  your hard disk (or battery...). See the example config files for details
       about that.

   COMPLEX MODE
       In complex mode, temperature limits are defined for each sensor thinkfan knows  about.  Setting  suitable
       limits  for  each sensor in your system will probably require a bit of experimentation and good knowledge
       about your hardware, but it's the safest way of keeping each component within its  specified  temperature
       range.  See  http://www.thinkwiki.org/wiki/Thermal_Sensors  for  details  on  which  sensor measures what
       temperature in a Thinkpad. On other systems you'll have to find out on your own. See the example  configs
       to learn about the syntax.

CONFIGURATION

       Some  example  configurations are provided with the source package. For detailed explanations please read
       the README file. If you installed  thinkfan  from  a  distribution  package,  you  may  find  them  under
       /usr/share/doc or wherever your package manager puts documentation.

OPTIONS

       -h     Show a short help message

       -s     Maximum seconds between temperature updates (default: 5)

       -b     Floating point number (0 ~ 20) to control rising temperature exaggeration (see README for why this
              is needed). Default 5.0

       -c     Load different configuration file (default: /etc/thinkfan.conf)

       -n     Do not become a daemon, log to both terminal and syslog

       -q     Be quiet (no status info on terminal)

       -z     Assume  we  don't  have  to  worry about resuming from standby when using the sysfs interface (see
              README!)

       -p     Use the pulsing-fan workaround (for older Thinkpads). Takes an  optional  floating-point  argument
              (0-10s) as depulsing duration. Default 0.5s.

       -D     DANGEROUS mode: Disable all sanity checks. May damage your hardware!!

BUGS

       If   you   have   any   problems   with   thinkfan,   please   go   to   the   help   forum   at  sf.net:
       http://sourceforge.net/projects/thinkfan/forums/forum/905019

thinkfan 0.8                                      October 2011                                       THINKFAN(1)