I'm completely stumped.
For a few months I had been running a Nvidia 560ti -> Pioneer 1022k -> Panasonic VIERA TC-L55E50 via HDMI with no issues. Video and sound worked great.
The Nvidia card was replaced with a Sapphire Radeon 7950 (a newer video card). Right away I ran into an issue with the HDMI output. I received full 7.1 sound via the HDMI, but the video signal was just a bar of static (see photo).
The kicker of the whole debacle is that if I continuously re-engage the HDMI ouput from the Video settings, I will actually get a normal signal once out of every 10-20 attempts. If the PC goes into sleep mode, I lose the signal and return to the bars of static.
After trying everything I could (new HDMI cables, driversweep, old drivers, new drivers, etc) I decided the card was faulty and sent it back. Replacement card arrived and I experienced the exact same problem.
I tried to bypass the Pioneer1022 and go directly into the HDTV (Radeon 7950 -> Panasonic VIERA TC-L55E50) and this actually worked fine. Video signal was normal (of course, no 7.1 audio).
This leads me to believe there is a problem with the Pioneer receiver. After more exploring, I found every HDMI device I own worked perfectly fine in the receiver, which made me rethink everything.
I am now at a total loss. Has anyone experienced anything like this? I've heard about perhaps a handshake issue, but the fact that I can getting a working signal after 10+ attempts makes me think it's something else.
If anyone has a clue of what could be wrong, I would be grateful. This HTPC is no longer a HTPC and AMD/Sapphire doesn't seem to offer any help.