From: Jesse Barnes <jbarnes@virtuousgeek.org>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: 2.6.25-rc2 System no longer powers off after suspend-to-disk. Screen becomes green.
Date: Wed, 20 Feb 2008 16:17:51 -0800
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Cc: "Jeff Chua" <jeff.chua.linux@gmail.com>,
       "Linus Torvalds" <torvalds@linux-foundation.org>,
       lkml <linux-kernel@vger.kernel.org>, "Dave Airlie" <airlied@linux.ie>,
       linux-acpi@vger.kernel.org,
       "suspend-devel List" <suspend-devel@lists.sourceforge.net>,
       "Greg KH" <gregkh@suse.de>
References: <Pine.LNX.4.64.0802210101050.3576@boston.corp.fedex.com> <200802201534.36174.jbarnes@virtuousgeek.org> <200802210049.42820.rjw@sisk.pl>
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On Wednesday, February 20, 2008 3:49 pm Rafael J. Wysocki wrote:
> > And just to confirm that, I just tested the current DRM modules against a
> > 2.6.23.15 kernel.
>
> In 2.6.23.x there's no second ->suspend() during hibernation, so no wonder.

In 2.6.23 it's just:
  ->suspend()
  ->resume()
  *S4*
?

I ask because we still do the D3hot call in the DRM tree, so the hang should 
still occur unless the PM or ACPI core has changed.

> I'll figure out how to work around this issue in the current mainline, but
> a real fix will only be possible when we have separate callbacks for
> hibernation.

Ok, thanks.

Jesse
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