Xorg 7.4 breaks mga with G450

[Robert Noland]

On Mon, 2009-01-26 at 10:04 -0700, Warren Block wrote:
> On Sun, 25 Jan 2009, Robert Noland wrote:
> 
> > 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 old
> >> iiyama CRT monitor (Vision Master pro 410) for years.  System is running
> >> FreeBSD 6.4-RELEASE-p1
> >>
> >> Having just upgraded to Xorg 7.4 from 7.3 and following the instructions
> >> 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) image
> >> 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.
> 
> My G450 does the same (sync problem/noisy picture) on an LCD. 
> 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 
> be the monitor trying to be smart.  Sample log and xorg.conf at:
> 
> http://www.wonkity.com/~wblock/mga
> 
> -Warren Block * Rapid City, South Dakota USA
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