linux-kernel - Re: Hibernation considerations

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Message-ID: <20070721175639.GA3701@elf.ucw.cz>
Date:	Sat, 21 Jul 2007 19:56:39 +0200
From:	Pavel Machek <pavel@....cz>
To:	Jeremy Maitin-Shepard <jbms@....edu>
Cc:	david@...g.hm, "Rafael J. Wysocki" <rjw@...k.pl>,
	Alan Stern <stern@...land.harvard.edu>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"Huang, Ying" <ying.huang@...el.com>,
	Kyle Moffett <mrmacman_g4@....com>,
	Nigel Cunningham <nigel@...el.suspend2.net>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	Al Boldi <a1426z@...ab.com>
Subject: Re: Hibernation considerations

Hi!

> Pavel Machek <pavel@....cz> writes:
> 
> [snip]
> 
> > So it will be break at least battery status and "AC plugged in"
> > status, because those are handled by ACPI and we do not know how to
> > control them by hand.
> 
> It seems that it should be possible to initialize ACPI as if the system
> just booted up normally.  Then battery status and such should be
> correct, since they are correct after normal initialization.
> 
> It should be possible to make hibernate look just like a reboot to all
> of the devices, including ACPI stuff.

Patch to make that work with swsusp/shutdown method would be indeed
welcome. It does not work today.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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