linux-kernel - Re: s2disk: system powers up again after power off

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Date:	Wed, 16 Jul 2008 00:59:54 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	"Avuton Olrich" <avuton@...il.com>
Cc:	"Martin Michlmayr" <tbm@...ius.com>, linux-kernel@...r.kernel.org
Subject: Re: s2disk: system powers up again after power off

On Wednesday, 16 of July 2008, Avuton Olrich wrote:
> On Tue, Jul 15, 2008 at 1:24 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> > On Tuesday, 15 of July 2008, Avuton Olrich wrote:
> >> On Tue, Jul 15, 2008 at 5:47 AM, Martin Michlmayr <tbm@...ius.com> wrote:
> >> > When I use s2disk to suspend my HP 2510p notebook, it writes
> >> > everything to disk, and powers off... but after 2-3 seconds it often
> >> > powers on again.  This doesn't happen all the time but quite
> >> > frequently (definitely in the majority of cases).
> >> >
> >> > I believe I've never seen this when I use "halt" to power off the
> >> > machine (but I don't use halt very often).
> >> >
> >> > Any idea?
> >>
> >> Ugh, this happens here too, this started occuring before 2.6.25 but
> >> every time I try to bisect it takes hours and I end up screwing up
> >> somewhere along the way, so I haven't had time to bisect this
> >> correctly.
> >
> > Please try to put "shutdown method = shutdown" into the s2disk's configuration
> > file and see what happens in that case.
> 
> Anything a little less fancy? I use pm-hibernate, or gnome's Power
> Manager to hibernate; I don't even have s2disk installed, sorry I
> should have mentioned that.

Martin mentioned s2disk in his original post.  Never mind.

Please try to do "echo shutdown > /sys/power/disk" before hibernation and
see what happens.

Thanks,
Rafael
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