From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jesse Barnes <jbarnes@virtuousgeek.org>
Subject: Re: [PATCH] PCI PM: Restore standard config registers of
	all devices early (was: Re: EeePC resume failure - timers)
Date: Tue, 20 Jan 2009 12:32:00 -0800
Message-ID: <200901201232.00966.jbarnes@virtuousgeek.org>
References: <Pine.LNX.4.44L0.0901161010400.2417-100000@iolanthe.rowland.org>
	<200901201209.37836.jbarnes@virtuousgeek.org>
	<200901201215.11559.jbarnes@virtuousgeek.org>
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To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>, john stultz <johnstul@us.ibm.com>, Linux PCI <linux-pci@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>, pm list <linux-pm@lists.linux-foundation.org>
List-Id: linux-pm@vger.kernel.org

On Tuesday, January 20, 2009 12:15 pm Jesse Barnes wrote:
> On Tuesday, January 20, 2009 12:09 pm Jesse Barnes wrote:
> > On Tuesday, January 20, 2009 11:45 am Linus Torvalds wrote:
> > > On Tue, 20 Jan 2009, Jesse Barnes wrote:
> > > > Hm it's probably not display programming related then... Sounds like
> > > > the i830_update_dri_buffers() call is failing for some reason.  The
> > > > kernel driver does do some I/O mapping stuff at enter/leavevt time
> > > > (and therefore suspend/resume time), can you reproduce the issue just
> > > > by VT switching?  If so you might be able to see something useful in
> > > > the kernel log...
> > >
> > > I was going to say that I've been VT switching and it has worked, but I
> > > decided to double-check. And yes, I can reproduce it that way. And no,
> > > no kernel messages that are visible that way either.
> >
> > So the machine is alive enough for you to see the logs?  Can you get a
> > backtrace (both kernel & userspace)?
>
> Oops, just realized by "no messages visible" you probably meant that it
> really was hung rather than you saw no useful messages.  That'll make
> things more difficult.  Which 2D driver are you running?

And I assume you've tried keeping an ssh session open on the machine while VT 
switching (that's *usually* sufficient for me, in all but the worst of 
crashes)...