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Date:      Mon, 17 Nov 2008 18:11:07 +0100
From:      Roland Smith <rsmith@xs4all.nl>
To:        Kevin Oberman <oberman@es.net>
Cc:        freebsd-x11@freebsd.org
Subject:   Re: Firefox 3 displays pieces of desktop background
Message-ID:  <20081117171107.GA32856@slackbox.xs4all.nl>
In-Reply-To: <20081117162455.ABC5C45010@ptavv.es.net>
References:  <20081117061157.GA2003@reindeer.haidundneu23.net> <20081117162455.ABC5C45010@ptavv.es.net>

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On Mon, Nov 17, 2008 at 08:24:55AM -0800, Kevin Oberman wrote:
> > Date: Mon, 17 Nov 2008 07:11:57 +0100
> > From: Christoph Moench-Tegeder <cmt@burggraben.net>
> > Sender: owner-freebsd-x11@freebsd.org
> >=20
> > ## Mark Kirkwood (markir@paradise.net.nz):
> >=20
> > > I'm on 7.1 Prerelease refreshed a few days ago. I've noticed that=20
> > > Firefox 3 (3.0.4, but 3.0.3 was the same) displays snippets from ones=
=20
> > > desktop on some webpages (yahoo and youtube being the 2 most recent).
> >=20
> > Image rendering was optimized in Firefox 3, so it breaks with a lot
> > of xservers (seems as if some pixmap rendering code is broken in X
> > and firefox triggers that problem).
> > Try setting Option "XaaNoOffscreenPixmaps" to "true" in the "Device"
> > section of your xorg.conf.
>=20
> Christoph,
>=20
> Thank yo so much for this suggestion.
>=20
> I have been annoyed by this odd problem since I started using Firefox3
> and this finally make things work correctly. I think this needs to be in
> a FAQ somewhere until/unless the Xorg driver is fixed.
>=20
> In any case, I was seeing this with an ATI Radeon X300 M22 graphics
> chipset. I don't seem to see it with my nVidia GeForce 7800 GT based
> system. I don't THINK I see it with my old MGA Matrox G450  , but I
> won't have my eyeballs in front of that system until next month, si I am
> not sure.
>=20
> Anyone seeing this with any other graphics device that does not use the
> RADEON driver?

The Radeon X 1650 Pro [RV535] has this problem (using XAA). The Radeon
HD 3450 [RV620 IIRC] (which doesn't support XAA or EXA yet) does not
display the problem. I tested it with both the ati and the radeonhd
driver. They both gave the same result.

Roland
--=20
R.F.Smith                                   http://www.xs4all.nl/~rsmith/
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