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Date:      Mon, 04 May 2009 15:49:27 -0500
From:      Robert Noland <rnoland@FreeBSD.org>
To:        Steve Polyack <korvus@comcast.net>
Cc:        freebsd-x11 <freebsd-x11@freebsd.org>, freebsd-stable <freebsd-stable@FreeBSD.org>
Subject:   Re: Radeon 9250 DRM in 7.2-RELEASE
Message-ID:  <1241470167.1788.45.camel@balrog.2hip.net>
In-Reply-To: <49FF51BC.5050104@comcast.net>
References:  <49FF28BC.5080304@comcast.net> <1241460816.1788.22.camel@balrog.2hip.net> <49FF387F.1080203@comcast.net> <1241464053.1788.32.camel@balrog.2hip.net> <49FF4857.4070904@comcast.net> <1241467827.1788.43.camel@balrog.2hip.net> <49FF51BC.5050104@comcast.net>

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On Mon, 2009-05-04 at 16:36 -0400, Steve Polyack wrote:
> Robert Noland wrote:
> > Ok, they are at least partially disabled...  I wonder if a BIOS update
> > would help.
> >
> > Anyway, the garbled screen issue is usually associated with the caching
> > method used on the PCI GART.  On IGP chips we force the GART to be
> > uncacheable.  On PCI chips they are supposed to be able to snoop the bu=
s
> > and DTRT.  All of the fixes for memory caching should be in 7.
> >
> > Please try the attached patch and see if that makes a difference.
> >
> > robert.
> >
> >  =20
>=20
> Unfortunately, this didn't help.  I should also clarify what I'm seeing,=20
> as it's not complete garbage as I thought.  I have a dual monitor setup,=20
> side-by-side using xrandr.  When I start X (xfce4) with drm available,=20
> the left monitor (primary) is a sold light shade of blue, except for a=20
> black corner which is maybe 10pix square.  The right monitor displays my=20
> typical background image with another black box over part of it.  If it=20
> shift back to the console and then back into X, I can see the outlines=20
> of my startup windows, but they contain garbage and the outlines are=20
> fuzzed with green and magenta garbage.

ok, how about this one... If this doesn't do it, then we need to start
digging...

robert.

--=20
Robert Noland <rnoland@FreeBSD.org>
FreeBSD

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