linux-kernel - Re: 2.6.25-rc2 System no longer powers off after suspend-to-disk. Screen becomes green.

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Date:	Wed, 20 Feb 2008 16:17:51 -0800
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	"Jeff Chua" <jeff.chua.linux@...il.com>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	lkml <linux-kernel@...r.kernel.org>,
	"Dave Airlie" <airlied@...ux.ie>, linux-acpi@...r.kernel.org,
	"suspend-devel List" <suspend-devel@...ts.sourceforge.net>,
	"Greg KH" <gregkh@...e.de>
Subject: Re: 2.6.25-rc2 System no longer powers off after suspend-to-disk. Screen becomes green.

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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