[mythtv-users] my display monitor was changed, now the frontend does not display properly

[rawgarlic at gmail.com]

I have this Mythbuntu 10.04 frontend working perfectly with an old NEC
MultiSync XV15+ VGA 15-inch monitor.

I was out of town for a week and we had some guests visiting for a few days.
They liked using Myth but did not like the old NEC VGA monitor.
So they shutdown this frontend and replaced the NEC with their own
Viewsonic 27-inch LCD monitor.
When they restarted the frontend, the Myth menus worked fine but there
was no video.
So they shutdown Myth and removed the Viewsonic and left.

I come back and connect the old NEC VGA monitor and now the Myth menus
and video work but ...
1.  Now Myth does not consume the full screen of the VGA display
2.  The top left corner is aligned with the top left corner of the VGA display
3.  But the rest of the Myth display is now a subset of the full VGA
display, like this ...


Myth-------->|
.......................
:                :    :
:                :    :
:                :    :
:                :    :
:................:    :
:                     :
:                     :
.......................
VGA-------------->|



How can I get this Myth frontend to reconfigure itself to the full VGA
display screen?

I have tried to mess around with Utilities/Setup -> Setup -> Screen
Setup Wizards
but that does not help much because I cannot see beyond the bottom
right corner of Myth.

What should I do?