No picture on direct HDMI connect, DVI detected on Display Discovery, HDCP fails

Seven year old setup: "S" console with Kinect and HD DVD external drive. HDMI connected directly to Panasonic Viera P54G25. TosLink to a Sony V333ES receiver. Life was good for seven years.

Situation: Last weekend I took a different HDMI cable and connected the Xbox to a different TV. I have not been able to get the Xbox to work with the Panny on direct HDMI connection since that time. I have read thru a couple-dozen threads of people having
done the exact same scenario with the exact same result; tried every possible solution, watched several horrendous youtube videos, and only one solution (partially) worked: an HT receiver with HDMI pass through displays a picture on my Panny.

Showstopper problem with the solution: HDCP fails. Error dialog "Secure HDCP link not found" for both optical drives. I have tried numerous combinations of HDMI cables and HDMI ports with a Denon AVR-2308ci...I get a picture, I can play games or watch amazon,
but movies on optical discs fail. HDCP fails on BOTH televisions. If this display workaround could only get the HDCP issue resolved, I will swap my old V333ES for this newer 2308ci. I have only recently come into possession of the 2308ci, but cannot find any
pass through solution that will allow HDCP to work...any ideas?

Additional notes:

- For some reason, simply connecting HDMI directly to the P54G25 seems to drastically change the Xbox display settings. I must connect the Xbox back to the receiver, then reset the display via the power button, then manually change the display settings/ resolution.

- Possible clue: if I instead plug the HDMI cable into the TV that it works with, my resolution will have been changed to 640x480, and again I must manually change the settings/resolution.

- In both scenarios listed above, Settings->System->Console Settings->Display claims that the connection type is DVI. Odd, considering that there is no DVI connector on the Xbox. (Yes, I'm aware HDMI is an extension of DVI).

- Black screen if I enable Display Discovery while connected via receiver. Must reset display with power button and configure rez and other settings again.

- Display Discovery has been enabled for seven years, but now it seems to cause the DVI/resolution problem: I must DISABLE Display Discovery in order for the Xbox to "discover" that it is connected via HDMI.

- I must manually set the display output to 1920x1080 while "connected via DVI" and Display Discovery=Enabled, it does not detect my resolution. HDCP doesn't work.

- After disabling Display Discovery, I can manually set the display output to 1080p while "connected via HDMI", it does not detect my resolution. HDCP doesn't work.

- The audio settings also usually get changed from 5.1 to Stereo each time the Xbox thinks it's connected via DVI: audio usually needs to be manually changed after the Xbox detects HDMI (after disabling Display Discovery).

- Connecting to the other TV: no problem with settings/resolution when enabling Display Discovery.

- Connecting to the other TV: HDCP fails...this is what is making me think my Xbox is the exclusive culprit, and is possibly toasted.

- I upgraded the Panny to the latest firmware release; this process also automatically resets everything to factory defaults. I still have a black screen on direct HDMI connection, but display still works when connected through the receiver. So the old firmware
is not the issue.

Things I tried:

- Booting the Xbox after removing the 250G hard drive.

- Reversing the HDMI cable.

- All three HDMI inputs on the Panny.

- Restarting devices in multiple different orders.

- Unplugging and re-plugging devices to force a handshake.

- Unplugging the devices for 60+ minutes.

- Disabling 3D TV in display settings.

- Manually setting TV screen size in Display Settings (was not detected).

- Clearing the cache.

- Several other suggestions that I cannot recall at the moment.

- Spent the last six hours of troubleshooting bare: only the power cable and HDMI cable are currently connected.

The only thing I can think of that I haven't yet tried is a complete nuke and reset of the console itself. I don't know if this will clear up the HDCP issue, and I don't want to wipe out and re-install everything if it won't resolve
HDCP.

So my question is...will flattening the Xbox resolve HDCP? I don't so much care if I can get a picture with a direct HDMI connection to the Panny and must continue using the receiver pass through, I just want the DVD drive and external HD DVD drive to play
movies again. Or if somebody knows of anything I haven't tried that everybody else also doesn't know about...

:)

 

XBox won't boot following update

Found after the June 2012 update that I'd display discovery mode was on and I had the Xbox uh he'd directly into my tv it came up with display mode not supported and you just get a blank screen. When plugged through my blu ray player hdmi it displays on
the screen. Found that display discovery think output is dvi I stad of hdmi. Disabled display discovery and it not selects HDMI though secure hdcp connection isn't working anymore

For sky tv or DVD playback

 

HDMI DOENST WORK ANYMORE AFTER DASHBOARD UPDATE(14719)

[quote user="Winterstar"]Actually, using a HDMI to DVI adapter does cause an HDCP error[/quote]It should not unless the monitor does not support HDCP. I have a console hooked up to a monitor that supports HDCP over DVI via a HDMI to DVI adapter. No issues.
The Display settings even show 1920x1080 and DVI on the 360.