Code/tp-fancontrol

1. !/bin/bash

1. tp-fancontrol 0.3.02 (http://thinkwiki.org/wiki/ACPI_fan_control_script)
2. Provided under the GNU General Public License version 2 or later or
3. the GNU Free Documentation License version 1.2 or later, at your option.
4. See http://www.gnu.org/copyleft/gpl.html for the Warranty Disclaimer.

1. This script dynamically controls fan speed on some ThinkPad models
2. according to user-defined temperature thresholds. It implements its
3. own decision algorithm, overriding the ThinkPad embedded
4. controller. It also implements a workaround for the fan noise pulse
5. experienced every few seconds on some ThinkPads.
7. Run 'tp-fancontrol --help' for options.
9. For optimal fan behavior during suspend and resume, invoke
10. "tp-fancontrol -u" during the suspend process.
12. WARNING: This script relies on undocumented hardware features and
13. overrides nominal hardware behavior. It may thus cause arbitrary
14. damage to your laptop or data. Watch your temperatures!
16. WARNING: The list of temperature ranges used below is much more liberal
17. than the rules used by the embedded controller firmware, and is
18. derived mostly from anecdotal evidence, hunches and wishful thinking.
19. It is also model-specific (see http://thinkwiki.org/wiki/Thermal_sensors).

1. Temperature ranges, per sensor:
2. (min temperature: when to step up from 0-th fan level,
3. max temperature: when to step up to maximum fan level)

THRESHOLDS=( # Sensor ThinkPad model

            #             R51     T41/2  Z60t   T43-26xx

1. min max # ---------- ------- ----- ----- ---------------------------

 50   70    #  EC 0x78    CPU     CPU    ?      CPU
 47   60    #  EC 0x79    miniPCI ?      ?      Between CPU and PCMCIA slot
 43   55    #  EC 0x7A    HDD     ?      ?      PCMCIA slot
 49   68    #  EC 0x7B    GPU     GPU    ?      GPU
 40   50    #  EC 0x7C    BAT     BAT    BAT    Sys BAT (front left of battery)
 40   50    #  EC 0x7D    n/a     n/a    n/a    UltraBay BAT
 37   47    #  EC 0x7E    BAT     BAT    BAT    Sys BAT (rear right of battery)
 37   47    #  EC 0x7F    n/a     n/a    n/a    UltraBay BAT

 45   60    #  EC 0xC0    ?       n/a    ?      Between northbridge and DRAM
 48   62    #  EC 0xC1    ?       n/a    ?      Southbridge (under miniPCI)
 50   65    #  EC 0xC2    ?       n/a    ?      Power circuitry (under CDC)

 47   58    #  HDD        ->      ->     ->     Hard disk internal sensor
 47   60    #  HDAPS      ->      ->     ->     HDAPS readout (same as EC 0x79)

)

LEVELS=( 0 2 4 7) # Fan speed levels ANTIPULSE=( 0 1 1 0) # Prevent fan pulsing noise at this level

                                    # (reduces frequency of fan RPM updates)

OFF_THRESH_DELTA=3 # when gets this much cooler than 'min' above, may turn off fan MIN_THRESH_SHIFT=0 # increase min thresholds by this much MAX_THRESH_SHIFT=0 # increase max thresholds by this much MIN_WAIT=180 # minimum time (seconds) to spend in a given level before stepping down

IBM_ACPI=/proc/acpi/ibm HDAPS_TEMP=/sys/bus/platform/drivers/hdaps/hdaps/temp1 PID_FILE=/var/run/tp-fancontrol.pid LOGGER=/usr/bin/logger INTERVAL=3 # sample refresh interval SETTLE_TIME=6 # wait this many seconds long before applying anti-pulsing RESETTLE_TIME=600 # briefly disable anti-pulsing at every N seconds SUSPEND_TIME=5 # seconds to sleep when receiving SIGUSR1 DISK_POLL_PERIOD=15 # poll period in seconds for disk sensors (it changes slowly and is expensive to read) HITACHI_MODELS="^(HTS726060M9AT00|HTS5410..G9AT00|IC25[NT]0..ATCS0[45]|HTE541040G9AT00|HTS5416..J9(AT|SA)00)" SEP=',' # Separator char for display

WATCHDOG_DELAY=$(( 3 * INTERVAL )) HAVE_WATCHDOG=`grep -q watchdog $IBM_ACPI/fan