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

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Date:	Sun, 30 Jul 2006 02:06:53 +0200
From:	Pavel Machek <pavel@....cz>
To:	Jiri Slaby <jirislaby@...il.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, Andrew Morton <akpm@...l.org>,
	linux-kernel@...r.kernel.org, linux-pm@...l.org, linux-mm@...ck.org
Subject: Re: swsusp regression (s2dsk) [Was: 2.6.18-rc2-mm1]

Hi!

> >>>> 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.
> > 
> > Can you try up kernel, no highmem? (mem=512M)?
> 
> It writes then:
> p16v: status 0xffffffff, mask 0x00001000, pvoice f7c04a20, use 0
> in endless loop when resuming -- after reading from swap.

Okay, so we have two different problems here.

One is "hang during suspend" with smp/highmem mode, and one is
probably driver problem with p16v (whatever it is).

/data/l/linux/sound/pci/emu10k1/irq.c:
snd_printk(KERN_ERR "p16v: status: 0x%08x, mask=0x%08x, pvoice=%p,
use=%d\n", status2, mask, pvoice, pvoice->use);

...aha, so you may want to unload emu10k1 for testing.

Since you mention radeon in one of your other mails, just try it in
vesafb mode...
							Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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