linux-kernel - Re: commit "radeonfb: Fix resume from D3Cold on some platforms" breaks resume from RAM on PowerBook

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Message-Id: <1236219920.7260.6.camel@pasglop>
Date:	Thu, 05 Mar 2009 13:25:20 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Gaudenz Steinlin <gaudenz@...iologie.ch>
Cc:	linux-kernel@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: commit "radeonfb: Fix resume from D3Cold on some platforms"
 breaks resume from RAM on PowerBook

On Wed, 2009-03-04 at 09:38 +0100, Gaudenz Steinlin wrote:
> Hi Benjamin
> 
> The commit 1fb25cb8b83e85f5bf1a4adb3c9a254c4ce92405 "radeonfb: Fix resume 
> from D3Cold on some platforms" breaks resume from suspend to RAM on my
> PowerBook (Model PowerBook5,8 with ATI Mobility Radeon 9600 M10).
> 
> On resume the pulsing led indicating sleep just changes to solid white
> and nothing else happens. 
> 
> Reverting this commit on top of the current Linus' tree fixes resume.

Ok, so after some tests here on what appear to the the exact same
machine...

I did the commit specifically to -fix- a regression due to upstream
changes, ie, for me it doesn't work without that commit. That is very
weird.

In fact, I just tried also with AGP and DRM enabled with X wobbly
windows etc... and it's working just fine.

I know that the early resume hack I have in there for powerbooks might
be a bit fishy, so please try without it (according to my previous email
on that matter).

Please let me know if that makes a difference.

Cheers,
Ben.

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