Re: [Swsusp-devel] hibernate when battery is low ?

[Gabor FLEISCHER <swsusp-XNofHPEhfVgNocND/f+tbZP2KDSNp7ea@public.gmane.org>]

On Thu, Jul 31, 2003 at 07:36:51PM -0400, Jan Merka <jm-E0REtxwXDqY@public.gmane.org> wrote:
> > ACPI_B=`acpi -b`
> > BAT=`echo "$ACPI_B" | sed -e "s/.*,\(.*\)%.*/\1/"`
> > CHARGE=`echo "$ACPI_B" | sed -e "s/.*:\([^,]*\),.*/\1/"`

> I will test it once I get to my developer box. I would recomend you to look 
> at wmab project. The source code might be an inspiration how to poll the 
> battery status.

I think you misunderstood something. This script goes to the place where
acpid calls it. I'm not polling anything, 'cause I get called when needed.
The only thing I do is reading the battery status. But to do this I use the
acpi program, which is included in the debian, and hopefully updated, so
that if there's any change in /proc/acpi, I won't have to know about it,
because `acpi -b` will give me the same output.

The another thing is, that it's true that I think most WMs have some kind of
APM/ACPI daemon. Unfortunatelly they probably are reading the relevant
status informations in every X second. The ideal would be if they could
register themselves to acpid as a callback function for Y event. This way
they could also set the behaviour of acpid. Currently I don't really know
what's happening: battery is getting down. Depending on how acpid,
klaptopdaemon (or another WM's daemon) is set maybe acpid will call
hibernate, maybe the WM's daemon...

But let's continue this on acpi-dev list!

Gavriel


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