I'm currently debugging a product using the ADV7919 to receive HDMI and forward it to configurable logic. Under certain circumstances (elevated temperature combined with at least one change in resolution) we are able to reproduce stability issues. This only happens with an Intel HD4400 HDMI source. If we start our device in cold (20°C) state and do not change the resolution (constant 1920x1200), we have stable video.
For debugging we've compared all registers for the case of stable and for the error case. These are the differences:
Content stable video
Content video disturbances
As you can see, most registers are not described by the software manual. We are wondering whether / hoping that you could give us further information regarding these registers. Maybe we can get a hint pointing at the source of our video issues.
Dev. Engineer Hardware