acpid.battery.sh

   1 #!/bin/sh
   2 # /etc/acpid/actions/battery.sh
   3 # based on work by Frank Dietrich <ablesoft@gmx.de>
   4 # £ukasz Pawelczyk <havner@pld-linux.org>
   5 #
   6 # Handle power related events and take appropriate actions.
   7
   8 if [ $# != 1 ]; then
   9         exit 1
  10 fi
  11 set $*
  12
  13 AC=/proc/acpi/ac_adapter/AC
  14 BAT=/proc/acpi/battery/$2
  15
  16 # get the AC connector state (plugged/unplugged) from /proc filesystem.
  17 AC_STATE=`sed -n 's/^.*\(off\|on\)-line.*/\1/p' $AC/state`
  18
  19 # get the battery state from /proc filesystem
  20 BAT_CAPACITY=`awk '/^remaining\ capacity:/ {print $3}' $BAT/state`
  21 BAT_WARNING=`awk '/^alarm:/ {print $2}' $BAT/alarm`
  22 BAT_CRITICAL=`awk '/^design\ capacity\ low:/ {print $4}' $BAT/info`
  23 if [ "$BAT_CAPACITY" -le "$((BAT_CRITICAL+200))" -a "$AC_STATE" = "off" ]; then
  24         BAT_STATE=critical
  25 elif [ "$BAT_CAPACITY" -le "$((BAT_WARNING+200))" -a "$AC_STATE" = "off" ]; then
  26         BAT_STATE=warning
  27 else
  28         BAT_STATE=normal
  29 fi
  30
  31 case "$AC_STATE" in
  32   on)
  33         # AC connector plugged in
  34         logger "acpid: `basename $AC` connector plugged in."
  35         # deactivate standby (spindown) timeout for the drive
  36         #hdparm -q -S 0 /dev/hda
  37         # handle processor
  38         #echo 0 > /proc/acpi/processor/CPU0/throttling
  39         #echo 0 > /proc/acpi/processor/CPU0/performance
  40         ;;
  41   off)
  42         # AC connector unplugged
  43         logger "acpid: `basename $AC` connector unplugged."
  44         # activate standby (spindown) timeout for the drive
  45         # timeout 5 minutes (man hdparm, for more informations)
  46         #hdparm -q -S 60 /dev/hda
  47         # handle processor
  48         #echo 4 > /proc/acpi/processor/CPU0/throttling
  49         #echo 3 > /proc/acpi/processor/CPU0/performance
  50         ;;
  51   *)
  52         # AC connector in undetermined state
  53         logger "acpid: Could not determine new `basename $AC` connector state."
  54         ;;
  55 esac
  56
  57 case "$BAT_STATE" in
  58   warning)
  59         # battery passed acpi alarm state and AC unplugged
  60         logger "acpid: Remaining `basename $BAT` battery capacity low."
  61         # play alarm sound
  62         #play /path_to/alarm.wav
  63         # put computer to sleep
  64         #echo mem > /sys/power/state
  65         #hibernate
  66         ;;
  67   critical)
  68         # some laptops generate acpi event when machine is about to turn off
  69         logger "acpid: Remaining `basename $BAT` battery capacity VERY low."
  70         # play alarm sound
  71         #play /path_to/alarm.wav
  72         # put computer to sleep
  73         #echo mem > /sys/power/state
  74         #hibernate
  75         ;;
  76   normal)
  77         # either battery is charged or AC plugged
  78         ;;
  79   *)
  80         # battery in undetermined state
  81         logger "acpid: Could not determine `basename $BAT` battery state."
  82         ;;
  83 esac