linux-kernel - Re: 2.6.20-rc3 regression: suspend to RAM broken on Mac mini Core Duo

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Message-Id: <200701090029.25324.rjw@sisk.pl>
Date:	Tue, 9 Jan 2007 00:29:25 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Tino Keitel <tino.keitel@...ei.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.20-rc3 regression: suspend to RAM broken on Mac mini Core Duo

On Monday, 8 January 2007 23:02, Tino Keitel wrote:
> On Mon, Jan 08, 2007 at 17:17:19 +0100, Pavel Machek wrote:
> > On Sun 2007-01-07 23:27:06, Tino Keitel wrote:
> > > On Sun, Jan 07, 2007 at 21:04:53 +0100, Tino Keitel wrote:
> > > > On Sun, Jan 07, 2007 at 13:23:13 -0500, Lee Revell wrote:
> > > > > On Sun, 2007-01-07 at 16:17 +0100, Tino Keitel wrote:
> > > > > > No information about the device/driver that refuses to resume.
> > > > > 
> > > > > You should be able to identify the problematic driver by removing each
> > > > > driver manually before suspending.
> > > > 
> > > > I can not reproduce it anymore, resume now works. I really hope that it
> > > > will stay so.
> > > 
> > > It didn't. It looks like it is unusable, becuase it isn't reliable in
> > > 2.6.20-rc3.
> > 
> > What was last working version? Can you pinpoint driver breaking it?
> 
> I just used 2.6.18.2 with a manual driven suspend/resume loop and fully
> loaded userspace for ca. 40 minutes, without a failure.
> 
> I tried to pinpoint the driver with pm_trace, without success (see my
> original posting).

Could you please verify if the issue is reproducible when you boot with
init=/bin/bash and suspend with the minimal list of modules loaded?

Rafael


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