linux-kernel - Re: [Regression, post-2.6.37-rc2] Unable to start KDE with 2.6.37-rc3 on Acer Ferrari One

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Date:	Mon, 29 Nov 2010 01:55:36 +0100
From:	Andreas Bombe <andreas.bombe@...um.de>
To:	Alex Deucher <alexdeucher@...il.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Airlie <airlied@...il.com>,
	DRI <dri-devel@...ts.freedesktop.org>
Subject: Re: [Regression, post-2.6.37-rc2] Unable to start KDE with
 2.6.37-rc3 on Acer Ferrari One

On Tue, Nov 23, 2010 at 09:02:57PM -0500, Alex Deucher wrote:
> On Tue, Nov 23, 2010 at 8:45 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> > On Wednesday, November 24, 2010, Alex Deucher wrote:
> >> Are you sure you've got the right commit?
> >
> > Well, as I said, I reverted that particular commit and things started to work.
> >
> >> That shouldn't change the calculation that's failing at all.  I'd guess it's
> >> probably one of these:
> >> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=d33ef52d9db8a36900dd53f2e32db9a521ace259
> >> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=f30df2fad0c901e74ac9a52a488a54c69a373a41
> >
> > I don't know.  Perhaps there are some interactions between the two and the
> > reverted one.  I can try reverting these tomorrow if you want me to.
> 
> Can you try just reverting this patch:
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=d33ef52d9db8a36900dd53f2e32db9a521ace259
> 
> I think the real issue is a bug in the 3D driver (probably a flush at
> the wrong time) that one of these commits exposing.

I ran into the same problem and bisected, commit d33ef52 got the blame.
It's a Radeon HD 4850 in my case, apart from that the problem was
exactly the same.

-- 
Andreas Bombe
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