[openbox] a power daemon for openbox users?

Pedro Ribeiro pedrib at gmail.com
Tue Jul 13 15:49:36 EDT 2010

On 13 July 2010 16:57, Louis-David Mitterrand
<vindex+lists-openbox at apartia.org> wrote:
> Hi,
> What do openbox users use as power-daemon on their laptop? Some utility
> that would halt or suspend when battery power becomes critically low,
> but without any gnome dependency. Does such a thing exist?
> Thanks,
> --
> http://www.cruisefish.net
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> openbox mailing list
> openbox at icculus.org
> http://icculus.org/mailman/listinfo/openbox

It exists, and certainly its already installed in your laptop. Its
called acpid. Its a daemon that responds to ACPI events.

In Debian/Ubuntu, there are two directories where you can put scripts
to control it.
/etc/acpi/events - the events that trigger an action
/etc/acpi/actions - actions taken (regular bash scripts)

The format of the events is pretty simple, here's one:
event=battery/* PNP0C0A:00 00000080 00000001

This basically means that when the event with that code occurs, the
script in action is run.

To find out event codes, run the acpi_listen program. Wait for a
critical or low battery warning (possibly watching the battery low led
on your laptop) and note down the corresponding code on event=. Then
just run a script that hibernates, shuts down, whatever on action=
(remember to set the executable bit on the script).

It may be more trouble that its worth it. It took me a few weeks to
get all my pm functions right, but now I'm completely free of any
gnome-power-manager, pm-utils and all that crap which gave me trouble
for such a long time.


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