Dual-head Gnome / GDM non-Xinerama working with Matrox G450 on RedHat7.3

[Dietmar May <dcmay@xxxxxxxx>]

I searched for information about running multi-head Gnome GDM (or XDM) 
sessions with XFree, but couldn't really find anything to indicate that 
it was possible. As a matter of fact, some of the gnome mailing lists 
basically said, Wait for gnome 2.2.

However, I did manage to get it working. There may be a cleaner way, but 
here's what I did. I hope this can help someone else get it going too. 
(Who knows, that someone may be me in 4 months after I've forgotten 
exactly what changes to make :-)).

These changes apply to RedHat 7.3 with Gnome (and no KDE) installed.