linux-kernel - Re: Help with debugging intermittent crash on resume from hibernation

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Date:	Fri, 20 Mar 2015 04:57:01 +0100
From:	Mike Galbraith <umgwanakikbuti@...il.com>
To:	Nikolaus Rath <Nikolaus@...h.org>
Cc:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Pavel Machek <pavel@....cz>
Subject: Re: Help with debugging intermittent crash on resume from
 hibernation

(+CC)

On Thu, 2015-03-19 at 20:21 -0700, Nikolaus Rath wrote:
> On Mar 13 2015, Nikolaus Rath <Nikolaus@...h.org> wrote:
> > Hello,
> >
> > In about one out of 10 resumes from hibernation, my system resets after
> > the hibernation image has been loaded. I am hibernating using
> >
> > # echo platform > /sys/power/disk
> > # echo disk > /sys/power/state
> >
> > When testing hibernation using
> >
> > # echo core > /sys/power/pm_test
> > # echo platform > /sys/power/disk
> > # echo disk > /sys/power/state
> >
> > I was not able to produce the same failure.
> >
> > I then tried attaching a serial console and booted with
> > console=ttyS0,115200n8 no_console_suspend. For the failed attempt, the
> > last messages before the reset are:
> [...]
> 
> I reproduced the same problem with 4.0.0-rc3. Is there anything I can do
> to get more debugging information?
> 
> Thanks,
> -Nikolaus
> 


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