linux-kernel - Re: swsusp regression (s2dsk) [Was: 2.6.18-rc2-mm1]

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Message-Id: <200607300110.01943.rjw@sisk.pl>
Date:	Sun, 30 Jul 2006 01:10:01 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Jiri Slaby <jirislaby@...il.com>
Cc:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	pavel@...e.cz, linux-pm@...l.org, linux-mm@...ck.org
Subject: Re: swsusp regression (s2dsk) [Was: 2.6.18-rc2-mm1]

On Sunday 30 July 2006 01:06, Jiri Slaby wrote:
> Rafael J. Wysocki napsal(a):
> > Hi,
> > 
> > On Saturday 29 July 2006 19:58, Jiri Slaby wrote:
> >> Andrew Morton napsal(a):
> >>> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc2/2.6.18-rc2-mm1/
> >> Hello,
> >>
> >> I have problems with swsusp again. While suspending, the very last thing kernel
> >> writes is 'restoring higmem' and then hangs, hardly. No sysrq response at all.
> >> Here is a snapshot of the screen:
> >> http://www.fi.muni.cz/~xslaby/sklad/swsusp_higmem.gif
> >>
> >> It's SMP system (HT), higmem enabled (1 gig of ram).
> > 
> > Most probably it hangs in device_power_up(), so the problem seems to be
> > with one of the devices that are resumed with IRQs off.
> > 
> > Does vanila .18-rc2 work?
> 
> Yup, it does.

Hm, in fact this may be a problem with any device driver.

Could you please boot the system with init=/bin/bash and try to suspend?

Rafael
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