From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Romano Giannetti <romano.giannetti@gmail.com>
Subject: Re: 2.6.21.1 fails to suspend/resume  to disk  (sort of)
Date: Wed, 23 May 2007 11:05:07 +0200
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Cc: linux-kernel@vger.kernel.org, Pavel Machek <pavel@ucw.cz>
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Hi,

On Wednesday, 23 May 2007 09:25, Romano Giannetti wrote:
> Hi, 
> 
> I am trying to upgrade from my ubuntu kernel 2.6.17.3 to 2.6.21.1 and I
> have quite a bunch of problems with suspend/resume, both to disk and to
> ram. I have reported the s2ram problem in a separate message (search for
> a follow-up to the thread with subject "[patch 00/69] -stable review".
> http://lkml.org/lkml/2007/5/23/38

Please see http://bugzilla.kernel.org/show_bug.cgi?id=8456
That seems to resemble the symptoms you describe.

> Now for the suspend to disk. With default setting (/sys/power/disk ==
> platform) my laptop (vaio PGC-FX701) fails to poweroff; it stays with
> backlight on, a white screen, and if I power it off manually afterward
> it did not resume.
> 
> By doing echo shutdown > /sys/power/disk the laptop *do* power off (it's
> very slow, but I think that's related with the 60 secs delay commented
> in the other post). Then it resume --- text console did resume ok ---
> but the virtual console with X do not come back. I had to do a
> ctrl-alt-backspace thing. 
> 
> Any hints? More data?

Could you please test the 2.6.22-rc2 kernel?  Also, if it still doesn't work
properly, could you apply the hibernation/suspend patchset available from
http://www.sisk.pl/kernel/hibernation_and_suspend/2.6.22-rc2/patches
on top of it and see if that helps?

Rafael
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