Difference between revisions of "Shutdown Pressing Power Button"

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m (Added link to more information about dbus and ksmserver)
(redirect to Power Management as suggested)
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[[Category:Power management (English)]]
#REDIRECT [[Power Management]]
[[Category:HOWTOs (English)]]
{{i18n_entry|English|Shutting system down by pressing the power button}}
{{i18n_entry|Italiano|Arrestare il sistema premendo il pulsante di accensione}}
{{i18n_entry|Русский|Выключение компьютера нажатием кнопки Power}}
{{i18n_entry|Español|Apagar el sistema pulsando el botón de apagado}}
If you want to shutdown your system by simply pressing the power button, do the following:
Install acpid package, if there is no hal in the DAEMONS array in rc.conf add acpid to it and create a file in ''/etc/acpi/events/'' named ''power'' with following content:
# /etc/acpi/events/power
# This is called when the user presses the power button
event=button/power (PWR.||PBTN)
To be able to test it start the acpid daemon:
/etc/rc.d/acpid start
From now on pressing the power button (lightly, not for few seconds) should properly shutdown the system.
{{i18n_entry|Español|Apagar el sistema pulsando el botón de apagado}}
Note that if you have '''hibernate''' configured and working you may want to change the last line with:
However, if you're using more sophisticated WM, you should use its own shutdown call, so it'd save its session etc.
To accomplish it in '''KDE 3''', simply change the action to:
''action=/opt/kde/bin/dcop --all-users --all-sessions ksmserver ksmserver logout 0 2 0''
For '''KDE 4''', dcop is being phased out in favour of dbus, so as well as the above you could also use:
''action=/usr/bin/qdbus org.kde.ksmserver /KSMServer logout 0 2 0''
More information on using dbus is [http://samwiseandthestereotypical.blogspot.com/2008/09/using-dbus-and-ksmserver-to-logout-and.html here]
Likewise for '''XFCE4.4''' change the action line to:
''action=echo POWEROFF | /usr/lib/xfce4/xfsm-shutdown-helper''
Note: For a more robust solution [If you are facing frequent WM crashes or working on a sacrificial PC for developing or testing your software...], you should take a look at "/usr/src/linux/Documentation/sysrq.txt", which is a kernel facility for yielding you [the user...] the CPU so that it could be used for any *rescue* work.

Revision as of 08:17, 27 July 2013

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