linux-kernel - Re: [linux-pm] 2.6.32-rc1: various BUGs on resume from hibernation

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Message-Id: <200910060206.49500.rjw@sisk.pl>
Date:	Tue, 6 Oct 2009 02:06:49 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	linux-pm@...ts.linux-foundation.org
Cc:	Alan Jenkins <alan-jenkins@...fmail.co.uk>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Stefan Seyfried <stefan.seyfried@...glemail.com>
Subject: Re: [linux-pm] 2.6.32-rc1: various BUGs on resume from hibernation

On Tuesday 06 October 2009, Rafael J. Wysocki wrote:
> On Monday 05 October 2009, Alan Jenkins wrote:
> > Alan Jenkins wrote:
> > > Stefan Seyfried wrote:
> > >> On Sun, 4 Oct 2009 22:47:43 +0200
> > >> "Rafael J. Wysocki" <rjw@...k.pl> wrote:
> > >>> On Sunday 04 October 2009, Alan Jenkins wrote:
> > >>>> Alan Jenkins wrote:
> > >>>>> I'm seeing a variety of BUGs on my EeePC 701 after hibernation. 
> > >>>>> Sometimes they cause a hang during resume; sometimes they happen
> > >>>>> just after resume. It doesn't happen all the time either - I've
> > >>>>> just hibernated three times in a row with no problems. It's most
> > >>>>> perplexing.
> > >>
> > >>> As I already asked in the Bugzilla, can you verify that this is
> > >>> reproducible without KMS?
> > >
> > > No. I couldn't reproduce it without KMS. Then I re-enabled KMS, 
> > > hibernated a couple of times, and had another resume hang (different 
> > > again - this time in the freezer).
> > >
> > 
> > Perhaps this GEM backtrace is more relevant than the others, or perhaps 
> > not. I closed the lid during resume from hibernation; the screen stayed 
> > black when I re-opened it, but syslogd recorded the following. (Again, 
> > I've done the exact thing before and often nothing unusual happens) -
> 
> OK, let's assume it's related to KMS, then.
> 
> 1. Do we already have a Bugzilla entry for it?

Ah, yes, we do, http://bugzilla.kernel.org/show_bug.cgi?id=14320 (I tend to
forget about these things).

> 2. Did it work with 2.6.31 (and with KMS)?
> 3. Are you aware of http://marc.info/?l=linux-kernel&m=125452324520623&w=4 ?

Thanks,
Rafael
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