My new Samsung TV did not recognize the signal from my xfi box. I did get a connection intermittently only after rebooting the xfi box. I've seen that this is a common issue on this forum. I am at last up and running after connecting to the HDMI arc port. This may be the solution for others who have an HDMI arc port on their TV. I am reluctant to switch HDMI ports even though I'd like to experiment with arc function and my home theater amplifier. Hope this works for otuers with this frustrating problem.