Huh. It looks like you've got everything set up properly. The only thing that I've seen so far in the manual that I would change to see if it helps is the "Monitor Out2" choice, as described on page 46 of the manual. I'd pick whichever one isn't currently picked to see if it helps. It shouldn't, but you never know.
Another idea is that possibly your TV isn't handling the resolution being sent to it from those other video sources. Maybe something to look at.
Sorry that I couldn't be more help. Perhaps someone else here can chime in and get you set up.
Adam