[mythtv] nVidia screen switching

[John Pilkington]

For many years nVidia has seen my displays as a single X-screen 0 having 
two adjacent sections; a 60 Hz vga monitor and a 50 Hz hdmi TV.  I have 
steered the picture from the command line by running either 
'mythfrontend', which gives a windowed 1024x576+64+64 display on the 
monitor, or 'mythfrontend -nw --geometry 1920x1080+1680+0' which puts it 
on the TV.  It works well and the ALSA:default virtual audio device can 
give sound from either or both sets sets of speakers.

But although it all works, current master seems slightly confused by 
this arrangement, and on startup in either mode the 'Display: available 
modes' section shows xrandr values that relate to the monitor, not the 
TV.  Should I just be quiet about it :-) ?

John P