$ pacman -Qo /usr/bin/xev
/usr/bin/xev принадлежит xorg-utils 7.4-4

$ lsmod | grep acpi
pata_acpi               3828  0 
libata                156908  3 ata_piix,ata_generic,pata_acpi

#!/bin/sh
# Default acpi script that takes an entry for all actions
# NOTE: This is a 2.6-centric script.  If you use 2.4.x, you'll have to
#       modify it to not use /sys
minspeed=`cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq`
maxspeed=`cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq`
setspeed="/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed"
set $*
case "$1" in
    button/power)
        #echo "PowerButton pressed!">/dev/tty5
        case "$2" in
            PWRF)   logger "PowerButton pressed: $2" ;;
            *)      logger "ACPI action undefined: $2" ;;
        esac
        ;;
    button/sleep)
        case "$2" in
            SLPB)   echo -n mem >/sys/power/state ;;
            *)      logger "ACPI action undefined: $2" ;;
        esac
        ;;
    ac_adapter)
        case "$2" in
            AC)
                case "$4" in
                    00000000)
                        echo -n $minspeed >$setspeed
                        #/etc/laptop-mode/laptop-mode start
                    ;;
                    00000001)
                        echo -n $maxspeed >$setspeed
                        #/etc/laptop-mode/laptop-mode stop
                    ;;
                esac
                ;;
            *)  logger "ACPI action undefined: $2" ;;
        esac
        ;;
    battery)
        case "$2" in
            BAT0)
                case "$4" in
                    00000000)   #echo "offline" >/dev/tty5
                    ;;
                    00000001)   #echo "online"  >/dev/tty5
                    ;;
                esac
                ;;
            CPU0)	
                ;;
            *)  logger "ACPI action undefined: $2" ;;
        esac
        ;;
    button/lid)
        #echo "LID switched!">/dev/tty5
        ;;
    *)
        logger "ACPI group/action undefined: $1 / $2"
        ;;
esac