After many hours of learning and playing with Powerstrip, I have finally gotten a resolution and timing that works well with my TV.
This is obviously a very obscure post, however, I wish it was out there when I was looking for it. If you happen to have a Samsung TXN3245FP with 1080i support enabled, then this may be of interest.
I’ve got my MythTV box hooked up to my TV via the VGA port through a VGA to component transcoder. In order to do that, X11 needs a custom ModeLine to setup the resolution and timing parameters. So, below is the ModeLine that I got to work with my TV. However, these parameters can be device specific, but this should give you a place to start if you’ve got the same TV. Good luck!
# 540p for Samsung TXN3245FP
ModeLine “704×489″ 30.587 704 736 808 912 489 518 521 559 +hsync +vsync
shoot, can’t turn on 1080i on mine
Ultimately though, it’s not the Gateway that does it for the X11, it’s Samsung’s own Q35. This essentially offers the same specs as the X11 but in a smaller, lighter package but with better battery life