[SOLVED] proc/acpi/button/power missing

Lone_Wolf · 2011-09-06 15:06:06

I have been unable to trigger an event when the power button is pressed on my laptop.

# uname -a
Linux julia 3.0-ARCH #1 SMP PREEMPT Tue Aug 30 08:53:25 CEST 2011 x86_64 AMD Turion(tm) 64 X2 Mobile Technology TL-50 AuthenticAMD GNU/Linux

acpid version 2.0.10-2, started through rc.conf as daemon.
dbus is active, HAL is not installed.

# tail -f /var/log/messages.log
Sep  6 14:48:03 localhost -- MARK --
Sep  6 15:08:03 localhost -- MARK --
Sep  6 15:28:03 localhost -- MARK --
Sep  6 15:36:02 localhost acpid: client 1328[0:100] has disconnected
Sep  6 15:36:02 localhost acpid: client connected from 2084[0:100]
Sep  6 15:36:02 localhost acpid: 1 client rule loaded
Sep  6 15:48:03 localhost -- MARK --
Sep  6 16:08:03 localhost -- MARK --
Sep  6 16:28:03 localhost -- MARK --
Sep  6 16:48:03 localhost -- MARK --
Sep  6 16:59:43 localhost logger: PowerButton pressed: PWRF

# acpi_listen
button/power PWRF 00000080 00000002

That output indicates the power button is recognized by the kernel, but it have no idea what i should put in /etc/acpi/handler.sh to shutdown the laptop when the powerbutton is pressed.

Last edited by Lone_Wolf (2011-09-07 12:02:23)

jakobm · 2011-09-06 15:23:06

acpid receives the button press event (see your acpi_listen output)
Have you investigated the handler.sh and read acpid (ArchWiki)? You specify a (list of) command(s) in the case-construct (e.g. invoke /sbin/shutdown).

Lone_Wolf · 2011-09-06 15:53:22

I have read the wiki (the tail and acpi_listen commands come directly from the wiki page).
My problem is what to put as condition for the case statement.

button/power and button/PWRF have no effect.

jakobm · 2011-09-06 17:27:49

button/power PWRF 00000080 00000002

These are the arguments passed to the handler script ($1 to $4).

handler.sh from acpid package:

case "$1" in
    button/power)
        #echo "PowerButton pressed!">/dev/tty5
        case "$2" in
            PBTN|PWRF)  logger "PowerButton pressed: $2" ;;
            *)          logger "ACPI action undefined: $2" ;;
        esac
        ;;

Replace the logger "PowerButton [...]" command (which is responsible for the message.log line you quote) with a shutdown invocation.

Lone_Wolf · 2011-09-07 12:01:59

It turns out i had to use PWRF as $2 in handler.sh to make things work.
I edited the acpid wiki page to make the relation between acpi-listen and the handler.sh parameters clearer.
Thanks for the help, Jakobm.

case "$1" in
    button/power)
        #echo "PowerButton pressed!">/dev/tty5
        case "$2" in
            PWRF)  poweroff ;;
            *)          logger "ACPI action undefined: $2" ;;
        esac

Solved

Arch Linux

#1 2011-09-06 15:06:06

[SOLVED] proc/acpi/button/power missing

#2 2011-09-06 15:23:06

Re: [SOLVED] proc/acpi/button/power missing

#3 2011-09-06 15:53:22

Re: [SOLVED] proc/acpi/button/power missing

#4 2011-09-06 17:27:49

Re: [SOLVED] proc/acpi/button/power missing

#5 2011-09-07 12:01:59

Re: [SOLVED] proc/acpi/button/power missing

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