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nic01
Tux's lil' helper
Joined: 17 Mar 2004
Posts: 87
Location: Copenhagen
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 Posted: Sat Aug 13, 2005 10:25 am Post subject: Dynamic fancontrol? [Solved] |
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Hi there.
I'm playing around with fancontrol to get an acceptable fan speed. After upgrading my Gigabyte K8NS Ultra-939 (will strongly advise people NOT to buy this piece of crap board!!) to BIOS F8 (from F5) the CPU fan is killing me. Idle cpu toogles the CPU fan to 3-4000 RPM CPU temp around 30 degrees. So I disabled the dynamic CPU fan in the BIOS.
Now what I want it to do is the following:
Temp below 45 degrees: CPU fan off
Temp between 45 - 55: CPU fan ~3000 RPM
Temp above 55: full CPU fan speed (max is around 5800 RPM)
When I use the fancontrol script the fan enables, as it's supposed to, at 45 degrees, but it's full speed.
| Code: | | echo 15 > /sys/bus/i2c/devices/0-0290/pwm1 |
gives me a the ideal 3000 RPM medium CPU fan speed.[/code]
My /etc/fancontrol
| Code: |
INTERVAL=10
FCTEMPS= 0-0290/pwm1=0-0290/temp2_input
FCFANS= 0-0290/pwm1=0-0290/fan1_input
MINTEMP= 0-0290/pwm1=45
MAXTEMP= 0-0290/pwm1=55
MINSTART= 0-0290/pwm1=15
MINSTOP= 0-0290/pwm1=100
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Thanks,
Nic
Last edited by nic01 on Mon Aug 15, 2005 12:38 pm; edited 1 time in total |
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theDOC_23
Tux's lil' helper
Joined: 02 Dec 2004
Posts: 121
Location: Aachen, GER
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| Posted: Sun Aug 14, 2005 8:31 pm Post subject: |
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That is pretty much what I wanted to do, so i patched the fancontol script a bit:
| Code: |
#!/bin/bash
#
# Simple script implementing a temperature dependent fan speed control
#
# Version 0.63
#
# Usage: fancontrol [CONFIGFILE]
#
# Dependencies:
# bash, awk, egrep, sed, lm_sensors :)
#
# Please send any questions, comments or success stories to
# marius.reiner@hdev.de
# Thanks!
#
# The latest version of this script is available at:
# http://www.hdev.de/fancontrol/fancontrol.html
# or in the CVS version of lm_sensors
#
# For configuration instructions and warnings please see fancontrol.txt, which
# can be found in the doc/ directory or at the website mentioned above.
#
#
# Copyright 2003 Marius Reiner <marius.reiner@hdev.de>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#
#DEBUG=1
MAX=255
echo $$ > /var/run/fancontrol.pid
function LoadConfig {
echo "Loading configuration from $1 ..."
# grep configuration from file
INTERVAL=`egrep '^INTERVAL=.*$' $1 | sed -e 's/INTERVAL=//g'`
FCTEMPS=`egrep '^FCTEMPS=.*$' $1 | sed -e 's/FCTEMPS=//g'`
MINTEMP=`egrep '^MINTEMP=.*$' $1 | sed -e 's/MINTEMP=//g'`
MIDTEMP=`egrep '^MIDTEMP=.*$' $1 | sed -e 's/MIDTEMP=//g'`
MAXTEMP=`egrep '^MAXTEMP=.*$' $1 | sed -e 's/MAXTEMP=//g'`
MINSTART=`egrep '^MINSTART=.*$' $1 | sed -e 's/MINSTART=//g'`
MINSTOP=`egrep '^MINSTOP=.*$' $1 | sed -e 's/MINSTOP=//g'`
# optional settings:
FCFANS=`egrep '^FCFANS=.*$' $1 | sed -e 's/FCFANS=//g'`
# Check whether all mandatory settings are set
if [[ -z ${INTERVAL} || -z ${FCTEMPS} || -z ${MINTEMP} || -z ${MAXTEMP} || -z ${MINSTART} || -z ${MINSTOP} ]]
then
echo "Some mandatory settings missing, please check your config file!"
exit 1
fi
# here the other settings should be verified
# write settings to arrays for easier use and print them
echo
echo "Common settings:"
echo " INTERVAL=$INTERVAL"
let fcvcount=0
for fcv in $FCTEMPS
do
AFCPWM[$fcvcount]=`echo $fcv |cut -d'=' -f1`
AFCTEMP[$fcvcount]=`echo $fcv |cut -d'=' -f2`
AFCFAN[$fcvcount]=`echo $FCFANS |sed -e 's/ /\n/g' |egrep "${AFCPWM[$fcvcount]}" |cut -d'=' -f2`
AFCMINTEMP[$fcvcount]=`echo $MINTEMP |sed -e 's/ /\n/g' |egrep "${AFCPWM[$fcvcount]}" |cut -d'=' -f2`
AFCMIDTEMP[$fcvcount]=`echo $MIDTEMP |sed -e 's/ /\n/g' |egrep "${AFCPWM[$fcvcount]}" |cut -d'=' -f2`
AFCMAXTEMP[$fcvcount]=`echo $MAXTEMP |sed -e 's/ /\n/g' |egrep "${AFCPWM[$fcvcount]}" |cut -d'=' -f2`
AFCMINSTART[$fcvcount]=`echo $MINSTART |sed -e 's/ /\n/g' |egrep "${AFCPWM[$fcvcount]}" |cut -d'=' -f2`
AFCMINSTOP[$fcvcount]=`echo $MINSTOP |sed -e 's/ /\n/g' |egrep "${AFCPWM[$fcvcount]}" |cut -d'=' -f2`
echo
echo "Settings for ${AFCPWM[$fcvcount]}:"
echo " Depends on ${AFCTEMP[$fcvcount]}"
echo " Controls ${AFCFAN[$fcvcount]}"
echo " MINTEMP=${AFCMINTEMP[$fcvcount]}"
echo " MIDTEMP=${AFCMIDTEMP[$fcvcount]}"
echo " MAXTEMP=${AFCMAXTEMP[$fcvcount]}"
echo " MINSTART=${AFCMINSTART[$fcvcount]}"
echo " MINSTOP=${AFCMINSTOP[$fcvcount]}"
let fcvcount=fcvcount+1
done
echo
}
if [ -f "$1" ]
then
LoadConfig $1
else
LoadConfig /etc/fancontrol
fi
DIR=/proc/sys/dev/sensors
SDIR=/sys/bus/i2c/devices
if [ ! -d $DIR ]
then
if [ ! -d $SDIR ]
then
echo $0: 'No sensors found! (did you load the necessary modules?)'
exit 1
else
SYSFS=1
DIR=$SDIR
fi
fi
cd $DIR
# $1 = pwm file name
function pwmdisable()
{
if [ "$SYSFS" = "1" ]
then
echo $MAX > $1
ENABLE=${1}_enable
if [ -f $ENABLE ]
then
echo 0 > $ENABLE
fi
else
echo $MAX 0 > $1
fi
}
# $1 = pwm file name
function pwmenable()
{
if [ "$SYSFS" = "1" ]
then
ENABLE=${1}_enable
if [ -f $ENABLE ]
then
echo 1 > $ENABLE
fi
else
echo $MAX 1 > $1
fi
}
function restorefans()
{
echo 'Aborting, restoring fans...'
let fcvcount=0
while (( $fcvcount < ${#AFCPWM[@]} )) # go through all pwm outputs
do
pwmo=${AFCPWM[$fcvcount]}
pwmdisable $pwmo
fcvcount=$fcvcount+1
done
echo 'Verify fans have returned to full speed'
exit 1
}
trap restorefans SIGHUP SIGINT SIGQUIT SIGTERM SIGKILL
# function doing all the math
function calc () {
awk "BEGIN { print $@ }"
}
# main function
function UpdateFanSpeeds {
let fcvcount=0
while (( $fcvcount < ${#AFCPWM[@]} )) # go through all pwm outputs
do
#hopefully shorter vars will improve readability:
pwmo=${AFCPWM[$fcvcount]}
tsens=${AFCTEMP[$fcvcount]}
fan=${AFCFAN[$fcvcount]}
mint=${AFCMINTEMP[$fcvcount]}
midt=${AFCMIDTEMP[$fcvcount]}
maxt=${AFCMAXTEMP[$fcvcount]}
minsa=${AFCMINSTART[$fcvcount]}
minso=${AFCMINSTOP[$fcvcount]}
tval=`cat ${tsens}`
if [ $? -ne 0 ]
then
echo "Error reading temperature from $DIR/$tsens"
restorefans
fi
tval=`echo ${tval} |cut -d' ' -f3 |cut -d'.' -f1`
if [ "$SYSFS" = "1" ]
then
let tval="$tval / 1000"
fi
pwmpval=`cat ${pwmo}`
if [ $? -ne 0 ]
then
echo "Error reading PWM value from $DIR/$pwmo"
restorefans
fi
pwmpval=`echo ${pwmpval} | cut -d' ' -f1`
# If fanspeed-sensor output shall be used, do it
if [[ -n ${fan} ]]
then
fanval=`cat ${fan}`
if [ $? -ne 0 ]
then
echo "Error reading Fan value from $DIR/$fan"
restorefans
fi
fanval=`echo ${fanval} | cut -d' ' -f2`
else
fanval=1 # set it to a non zero value, so the rest of the script still works
fi
# debug info
if [ "$DEBUG" != "" ]
then
echo "pwmo=$pwmo"
echo "tsens=$tsens"
echo "fan=$fan"
echo "mint=$mint"
echo "maxt=$maxt"
echo "minsa=$minsa"
echo "minso=$minso"
echo "tval=$tval"
echo "pwmpval=$pwmpval"
echo "fanval=$fanval"
fi
if [ $tval -le $mint -a $pwmpval -ge $minsa ]
then
pwmval=$minso
elif [ $tval -ge $midt -a $pwmpval -le $minso ]
then
pwmval=$minsa
elif (( $tval >= $maxt ))
then
pwmval=255
fi
# if (( $tval <= $mint ))
# then pwmval=0 # at specified mintemp shut fan off
# elif (( $tval >= $maxt ))
# then pwmval=255 # at specified maxtemp switch to 100%
# else
# # calculate the new value from temperature and settings
# pwmval=`calc "(((${tval}-${mint})/(${maxt}-${mint}))^2*(255-${minso})+${minso})" |cut -d'.' -f1`
# if [ $pwmpval -eq 0 -o $fanval -eq 0 ]
# then # if fan was stopped start it using a safe value
# echo $minsa > $pwmo
# sleep 1
# fi
# fi
echo $pwmval > $pwmo # write new value to pwm output
if [ $? -ne 0 ]
then
echo "Error writing PWM value to $DIR/$pwmo"
restorefans
fi
if [ "$DEBUG" != "" ]
then
echo "new pwmval=$pwmval"
fi
fcvcount=$fcvcount+1
done
}
echo 'Enabling PWM on fans...'
let fcvcount=0
while (( $fcvcount < ${#AFCPWM[@]} )) # go through all pwm outputs
do
pwmo=${AFCPWM[$fcvcount]}
pwmenable $pwmo
if [ $? -ne 0 ]
then
echo "Error enabling PWM on $DIR/$pwmo"
restorefans
fi
fcvcount=$fcvcount+1
done
echo 'Starting automatic fan control...'
# main loop calling the main function at specified intervals
while true
do
UpdateFanSpeeds
sleep $INTERVAL
done
# some old stuff/missing features, will clean this up soon
#if ( test "$regulationtype" = "quad" ) ; then
# while true ; do
# temp=`cat ${temp1} | cut -b 12-13`
# if (( ${temp} < ${mintemp} )) ;
# then pwm=0
# elif (( ${temp} > ${maxtemp} )) ;
# then pwm=255
# else
# pwm=`calc "((10/(${maxtemp}-${mintemp})*(${temp}-${mintemp}))^2/1000*(${maxtemp}-${mintemp})*(255-${minspeed})+${minspeed})"`
# #no optimization here for readability (or sloth :))
# fi ;
# echo $pwm > ${pwm1} ;
#
# sleep 10 ;
# done ;
#elif ( test "$regulationtype" = "exp" ) ; then
#add support for exponential calculation here
#else
# pwmconst=$[(255-${minspeed})/(${maxtemp}-${mintemp})]
# while true ; do
# let temp=`cat temp1 | cut -b 12-13` ;
# if (( ${temp} < ${mintemp} )) ;
# then pwm=0
# elif (( ${temp} > ${maxtemp} )) ;
# then pwm=255
# else
# pwm=$[(${temp}-${mintemp})*${pwmconst}+${minspeed}]
# fi ;
# echo $pwm > pwm2 ;
#
# sleep 10 ;
# done ;
#fi
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/etc/fancontrol
| Code: |
INTERVAL=10
FCTEMPS=0-0d00/pwm2=0-0d00/temp1_input
MINTEMP=0-0d00/pwm2=40
MIDTEMP=0-0d00/pwm2=50
MAXTEMP=0-0d00/pwm2=55
MINSTART=0-0d00/pwm2=20
MINSTOP=0-0d00/pwm2=12
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What I have done, is, I added the MIDTEMP value and replaced the speed/temp checks and changes with my own (very ugly but works for me  ). The script adjusts as follows:
If the temp falls below MINTEMP the fan is set to MINSTOP, if it raises above MIDTEMP the fan is set to MINSTART and if it raises above MAXTEMP the fan goes to full speed. The speed the fan has in the zone between MIN- and MIDTEMP depends on what it was before. In my config that means, if the cpu temp raises above 50 the fan will speed up to MINSTART and the temp has to fall below 40 to get the fan set to MINSTOP again. This is to prevent the fan from switching constantly between MINSTART MINSTOP if the temp is switching between 40 and 41 i.e.
a setup for you would be something like this:
| Code: |
INTERVAL=10
FCTEMPS=0-0d90/pwm1=0-0d90/temp2_input
MINTEMP=0-0d90/pwm1=40
MIDTEMP=0-0d90/pwm1=50
MAXTEMP=0-0d90/pwm1=55
MINSTART=0-0d90/pwm1=15
MINSTOP=0-0d90/pwm1=0
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I hope you can use this |
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nic01
Tux's lil' helper
Joined: 17 Mar 2004
Posts: 87
Location: Copenhagen
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| Posted: Mon Aug 15, 2005 12:38 pm Post subject: |
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Thanks mate! That was excactly what I was looking. The solution with MIDTEMP is great.
Cheers,
Nicholai |
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