https://www.thinkwiki.org/w/api.php?action=feedcontributions&feedformat=atom&user=WbnStsThinkWiki - User contributions [en]2026-05-05T09:53:09ZUser contributionsMediaWiki 1.31.12https://www.thinkwiki.org/w/index.php?title=Code/tp-fancontrol&diff=29290Code/tp-fancontrol2007-04-13T02:44:26Z<p>WbnSts: </p>
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<div>#!/bin/bash<br />
<br />
# tp-fancontrol 0.3.02 (http://thinkwiki.org/wiki/ACPI_fan_control_script)<br />
# Provided under the GNU General Public License version 2 or later or<br />
# the GNU Free Documentation License version 1.2 or later, at your option.<br />
# See http://www.gnu.org/copyleft/gpl.html for the Warranty Disclaimer.<br />
<br />
# This script dynamically controls fan speed on some ThinkPad models<br />
# according to user-defined temperature thresholds. It implements its<br />
# own decision algorithm, overriding the ThinkPad embedded<br />
# controller. It also implements a workaround for the fan noise pulse<br />
# experienced every few seconds on some ThinkPads.<br />
#<br />
# Run 'tp-fancontrol --help' for options.<br />
#<br />
# For optimal fan behavior during suspend and resume, invoke <br />
# "tp-fancontrol -u" during the suspend process.<br />
# <br />
# WARNING: This script relies on undocumented hardware features and<br />
# overrides nominal hardware behavior. It may thus cause arbitrary<br />
# damage to your laptop or data. Watch your temperatures!<br />
#<br />
# WARNING: The list of temperature ranges used below is much more liberal<br />
# than the rules used by the embedded controller firmware, and is<br />
# derived mostly from anecdotal evidence, hunches and wishful thinking.<br />
# It is also model-specific (see http://thinkwiki.org/wiki/Thermal_sensors).<br />
<br />
# Temperature ranges, per sensor:<br />
# (min temperature: when to step up from 0-th fan level,<br />
# max temperature: when to step up to maximum fan level)<br />
THRESHOLDS=( # Sensor ThinkPad model<br />
# R51 T41/2 Z60t T43-26xx<br />
# min max # ---------- ------- ----- ----- ---------------------------<br />
50 70 # EC 0x78 CPU CPU ? CPU<br />
47 60 # EC 0x79 miniPCI ? ? Between CPU and PCMCIA slot<br />
43 55 # EC 0x7A HDD ? ? PCMCIA slot<br />
49 68 # EC 0x7B GPU GPU ? GPU<br />
40 50 # EC 0x7C BAT BAT BAT Sys BAT (front left of battery)<br />
40 50 # EC 0x7D n/a n/a n/a UltraBay BAT<br />
37 47 # EC 0x7E BAT BAT BAT Sys BAT (rear right of battery)<br />
37 47 # EC 0x7F n/a n/a n/a UltraBay BAT<br />
<br />
45 60 # EC 0xC0 ? n/a ? Between northbridge and DRAM<br />
48 62 # EC 0xC1 ? n/a ? Southbridge (under miniPCI)<br />
50 65 # EC 0xC2 ? n/a ? Power circuitry (under CDC)<br />
<br />
47 58 # HDD -> -> -> Hard disk internal sensor<br />
47 60 # HDAPS -> -> -> HDAPS readout (same as EC 0x79)<br />
)<br />
<br />
<br />
LEVELS=( 0 2 4 7) # Fan speed levels<br />
ANTIPULSE=( 0 1 1 0) # Prevent fan pulsing noise at this level<br />
# (reduces frequency of fan RPM updates)<br />
<br />
OFF_THRESH_DELTA=3 # when gets this much cooler than 'min' above, may turn off fan<br />
MIN_THRESH_SHIFT=0 # increase min thresholds by this much<br />
MAX_THRESH_SHIFT=0 # increase max thresholds by this much<br />
MIN_WAIT=180 # minimum time (seconds) to spend in a given level before stepping down<br />
<br />
IBM_ACPI=/proc/acpi/ibm<br />
HDAPS_TEMP=/sys/bus/platform/drivers/hdaps/hdaps/temp1<br />
PID_FILE=/var/run/tp-fancontrol.pid<br />
LOGGER=/usr/bin/logger<br />
INTERVAL=3 # sample refresh interval<br />
SETTLE_TIME=6 # wait this many seconds long before applying anti-pulsing<br />
RESETTLE_TIME=600 # briefly disable anti-pulsing at every N seconds<br />
SUSPEND_TIME=5 # seconds to sleep when receiving SIGUSR1<br />
DISK_POLL_PERIOD=15 # poll period in seconds for disk sensors (it changes slowly and is expensive to read)<br />
HITACHI_MODELS="^(HTS726060M9AT00|HTS5410..G9AT00|IC25[NT]0..ATCS0[45]|HTE541040G9AT00|HTS5416..J9(AT|SA)00)"<br />
SEP=',' # Separator char for display<br />
<br />
WATCHDOG_DELAY=$(( 3 * INTERVAL ))<br />
HAVE_WATCHDOG=`grep -q watchdog $IBM_ACPI/fan</div>WbnSts