HDMI issue with Xbox

I never post to anything like this, but I have searched everywhere online and have found no solution. So here goes...

A few days ago my Xbox stopped video and audio. I was finally able to get video back (the Y+RT thing might have fixed it), but no audio. Disabling Display Discovery in the Xbox settings brought back my audio. I returned the settings to 1080p. Everything
works on the HDMI port on the side of my TV. There are 3 additional HDMI ports on the back of the TV. None of the three work. I get "mode not supported" or an all static screen with a split second of the dashboard picture flickering every 5-6 seconds.

HDMI 1,2, & 3 -- "mode not supported" or flickering static screen

HDMI 4 -- beautiful 1080p with audio

I have tried 3 different HDMI cables with the same results (all roughly 6'). I have plugged my DirecTV STB and panny blu-ray in, and all 4 ports work at 1080p with no issues.

I want these HDMI ports on the back to work because this is a wall mount install and I want a clean install. The side HDMI is visible.

Help me, Internet. You're my only hope.

:)

 

Anyone else have issues with TV after last update?

XBox one updated the other night and since than XBox is unable to detect my DirecTV box. Checked under Settings > TV and does not detect anything. Find it to be a huge coincidence that the XBox updates and now the HDMI cable went bad at the same time?
Going to pick up a new HDMI cable tonight to see if this is the issue, was just wondering if anyone else experienced this issue or this issue at any other point with the XBox?

Thanks

 

NXOE Issue with HDMI

These aren't the preview forums:

forums.xbox.com/.../default.aspx

You also probably didn't read the release notes:

HDMI-In:

• You may experience a black screen when using a device via HDMI-in, even if this device is not a cable or set-top box.
  

• Workaround: Run through the initial TV set-up and configure for a TV provider even if you don’t have a TV provider.