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Date: Sat, 21 Jul 2007 19:56:39 +0200
From: Pavel Machek <pavel@ucw.cz>
To: Jeremy Maitin-Shepard <jbms@cmu.edu>
Cc: david@lang.hm, "Rafael J. Wysocki" <rjw@sisk.pl>,
       Alan Stern <stern@rowland.harvard.edu>,
       LKML <linux-kernel@vger.kernel.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       "Eric W. Biederman" <ebiederm@xmission.com>,
       "Huang, Ying" <ying.huang@intel.com>,
       Kyle Moffett <mrmacman_g4@mac.com>,
       Nigel Cunningham <nigel@nigel.suspend2.net>,
       pm list <linux-pm@lists.linux-foundation.org>,
       Al Boldi <a1426z@gawab.com>
Subject: Re: Hibernation considerations
Message-ID: <20070721175639.GA3701@elf.ucw.cz>
References: <Pine.LNX.4.44L0.0707171010490.3551-100000@iolanthe.rowland.org> <200707171802.30903.rjw@sisk.pl> <Pine.LNX.4.64.0707170959160.2467@asgard.lang.hm> <200707172150.44417.rjw@sisk.pl> <Pine.LNX.4.64.0707171302430.2467@asgard.lang.hm> <20070721102520.GE1902@elf.ucw.cz> <87ps2lojlc.fsf@jbms.ath.cx>
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Hi!

> Pavel Machek <pavel@ucw.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