linux-kernel - Re: 2.6.25-rc2 regression

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Message-Id: <200802200050.10158.rjw@sisk.pl>
Date:	Wed, 20 Feb 2008 00:50:09 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Soeren Sonnenburg <kernel@....de>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.25-rc2 regression - hang on suspend

On Tuesday, 19 of February 2008, Soeren Sonnenburg wrote:
> On Tue, 2008-02-19 at 22:06 +0100, Rafael J. Wysocki wrote:
> > On Tuesday, 19 of February 2008, Soeren Sonnenburg wrote:
> > > Hi,
> > 
> > Hi,
> > 
> > > since 2.6.25-rc1 (first version I tried) and still in rc2 (and git), I
> > > see a hang on s2ram already when trying to suspend.
> > 
> > Does it work with 2.6.24?
> 
> yes.

Please take the current mainline (there are a couple of nasty bugs fixed in
it), configure it with CONFIG_PM_DEBUG set, boot it with "no_console_suspend",
run

# echo 8 > /proc/sys/kernel/printk
# echo devices > /sys/power/pm_test
# echo mem > /sys/power/state

If it hangs, it should leave a stack trace before and I need that trace to see
what's going on.  If it doesn't hang, I'll tell you what to do next.

Thanks,
Rafael
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