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Date:      Mon, 26 Jan 2009 15:44:49 -0500
From:      Robert Noland <rnoland@FreeBSD.org>
To:        Warren Block <wblock@wonkity.com>
Cc:        freebsd-x11@freebsd.org
Subject:   Re: Xorg 7.4 breaks mga with G450
Message-ID:  <1233002689.88679.24.camel@squirrel.corp.cox.com>
In-Reply-To: <alpine.BSF.2.00.0901260943380.1030@wonkity.com>
References:  <%2B$PUWxC8yOfJFwC1@lap.knigma.org> <1232939280.1973.7.camel@wombat.2hip.net> <alpine.BSF.2.00.0901260943380.1030@wonkity.com>

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On Mon, 2009-01-26 at 10:04 -0700, Warren Block wrote:
> On Sun, 25 Jan 2009, Robert Noland wrote:
>=20
> > On Sun, 2009-01-25 at 22:50 +0000, Mark Knight wrote:
> >> Hi,
> >>
> >> I've been using the same PC with a Matrox G450 on AGP with a trusty ol=
d
> >> iiyama CRT monitor (Vision Master pro 410) for years.  System is runni=
ng
> >> FreeBSD 6.4-RELEASE-p1
> >>
> >> Having just upgraded to Xorg 7.4 from 7.3 and following the instructio=
ns
> >> in UPDATING I cannot get a stable picture.
> >>
> >> Using my stock xorg.conf (see below), or a brand new config version
> >> created by "Xorg -configure" I get an extremely noisy (but stable) ima=
ge
> >> if I lower resultion from my normal 1280x1024 to 1027x768.  At the
> >> standard resolution the monitor is unable to sync.
> >>
> >>    http://www.knigma.org.uk/scratch/Xorg.0.log
> >>    http://www.knigma.org.uk/scratch/xorg.conf
> >>
> >> I've tried with and without DDC and with and without
> >> HorizSync/VertRefresh and with and without SyncOnGreen (my monitor has
> >> always product a slightly sharper picture with the latter).
> >>
> >> 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.
>=20
> My G450 does the same (sync problem/noisy picture) on an LCD.=20
> mga-1.4.9 does it too, so I'd suspect a change in xorg-server.

I just discovered an issue... Can you forcibly rebuild the 1.4.9 driver
against the new server and see if that works?

robert.

> Resolutions other than 1024x768 come up as 1024x768 anyway.  That could=20
> be the monitor trying to be smart.  Sample log and xorg.conf at:
>=20
> http://www.wonkity.com/~wblock/mga
>=20
> -Warren Block * Rapid City, South Dakota USA

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