Update: I tried a different TV and the Jasper 360 is still only trying to configure as DVI out even though I have an HDMI plugged in. What else could be the
Amazon.com: Portal 2 - Xbox 360 : Video Games
Appropriate Reference Levels and Color Space settings...
Best Xbox 360 settings for best gaming experience - YouTube
Xbox 360 HDMI Display Settings Guide | Waiving Entropy