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Date:      Sun, 25 Jan 2009 22:08:00 -0500
From:      Robert Noland <rnoland@FreeBSD.org>
To:        Mark Knight <lists@knigma.org>
Cc:        freebsd-x11@freebsd.org
Subject:   Re: Xorg 7.4 breaks mga with G450
Message-ID:  <1232939280.1973.7.camel@wombat.2hip.net>
In-Reply-To: <%2B$PUWxC8yOfJFwC1@lap.knigma.org>
References:  <%2B$PUWxC8yOfJFwC1@lap.knigma.org>

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On Sun, 2009-01-25 at 22:50 +0000, Mark Knight wrote:
> Hi,
>=20
> I've been using the same PC with a Matrox G450 on AGP with a trusty old=20
> iiyama CRT monitor (Vision Master pro 410) for years.  System is running=20
> FreeBSD 6.4-RELEASE-p1
>=20
> Having just upgraded to Xorg 7.4 from 7.3 and following the instructions=20
> in UPDATING I cannot get a stable picture.
>=20
> Using my stock xorg.conf (see below), or a brand new config version=20
> created by "Xorg -configure" I get an extremely noisy (but stable) image=20
> if I lower resultion from my normal 1280x1024 to 1027x768.  At the=20
> standard resolution the monitor is unable to sync.
>=20
>    http://www.knigma.org.uk/scratch/Xorg.0.log
>    http://www.knigma.org.uk/scratch/xorg.conf
>=20
> I've tried with and without DDC and with and without=20
> HorizSync/VertRefresh and with and without SyncOnGreen (my monitor has=20
> always product a slightly sharper picture with the latter).
>=20
> Any ideas?

I think your on the right track... It sounds like the mode calculation
is off...  I won't have access to mga hardware before next weekend, but
even then mine is connected to a panel.

robert.

> Cheers,

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