linux-kernel - Re: [patch] PM: suspend/resume debugging should depend on SOFTWARE

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Message-Id: <1164317804.6222.11.camel@Homer.simpson.net>
Date:	Thu, 23 Nov 2006 22:36:44 +0100
From:	Mike Galbraith <efault@....de>
To:	Pavel Machek <pavel@...e.cz>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linus Torvalds <torvalds@...l.org>,
	Chuck Ebbert <76306.1226@...puserve.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [patch] PM: suspend/resume debugging should depend on
	SOFTWARE_SUSPEND

On Thu, 2006-11-23 at 13:39 +0000, Pavel Machek wrote:
> Hi!
> 
> > > > > Sane people use suspend-to-ram, and that's when you need the suspend and 
> > > > > resume debugging.
> > > > 
> > > > Here I am wishing I had the _opportunity_ to be sane.  With my ATI X850
> > > > AGP card, I have no choices except swsusp or reboot.
> > > 
> > > Have you tried s2ram (http://en.opensuse.org/S2ram)?
> > 
> > Cool.  That shows potential.  On an 2.6.19-rc6-rt4 kernel, it looked
> > like it _might_ have eventually gotten past boot.  At one line of kernel
> > output every ~10 seconds though, I gave up.  Virgin 2.6.19-rc6 went
> > panic with a black screen... have options, will tinker.
> 
> Try that -rt kernel, but turn off dyntick/hires timers. Also try
> hitting keyboard while resuming.

Hmm, I'll try that.  Interesting (read odd from my perspective) that the
rt kernel gets much further.  This is pretty hard to look at.

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