Xorg 7.4 breaks mga with G450

[Robert Noland]

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.

robert.

> Cheers,
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