I hooked up my 360 to the One via HDMI cord. When I select "TV" I do see the 360 homescreen, but out of proportion. When I move the stick to select my account, the Xbox one displays the play/pause/fast forward menu whenever I move the stick as if I was watching a youtube video and I can't use the 360 at all. I'm pretty sure that I set up my two Xbox's correctly. What is going on?
Xbox One-Xbox 360 connection via hdmi not working
hdmixbox-360xbox-one
Best Answer
This seems to be the intended way it's suppose to work. The Xbox One input HDMI doesn't allow you to use your Xbox One controller with the Xbox 360 (it doesn't make sense for it to work that way). You will likely still have to use the 360 controller, since the 360 console can only detect the signals produced by the 360 controller. You can still use some of the Xbox One features, but you'll probably have to use the Xbox One controller to navigate them.
Connecting you Xbox 360 up to your Xbox One like this allows you to play Xbox 360 game while still being able to reap the benefit of the Xbox One features. You will just have to switch between controllers to do so.
As for the out of proportion screen, try this
There should be an option called calibrate HDTV, which may be able to help solve your problem.