I forgot to mention that I can't get to that screen using the "hold exit button" on the main XG2 box, but I can use the settings menus and go to the "Comcast Labs" and it says signal quality is Good.
On the XID, I can get to the diagnostics screens, but am not entirely sure what to look for to figure out what might be wrong? Again, the two additional smaller boxes supposedly worked fine (I can't get a clear answer to the question about pixelation, but the issues evidently weren't as bad if they were present on the additional TVs) before they were replaced with the XiD-C boxes yesterday morning.
Thanks so much @CCAndrew !
If by gateway you mean their internet/voip gateway, then that is provided by Verizon - although it appears to be off the same coax cable. Yes, reset multiple times, a phone tech ran a bunch of stuff last night and said - hm, call again next week. Evidently, the previous time my in-laws called they thought the new XiD satellite boxes would solve the issue (not sure why.)
Am I correct that the one satellite that says "Lowerlayerdown" probably has an actual issue with the physical cable connection somewhere?
The other satellite says has numbers I think you told someone else were no good?
MoCA Status: Up
TX Broadcast: 630
Current PHY rate: 646
The XRE-10000 error means the box isnt enabled in your account. call xfinity and ask them to make the boxes active, or enable them. once they do that you will be able to activate them. for the main x1 box, see if you have a coax amplifier and if so, is it getting power? If you dont have one try to get one and see if that works.
extra question... you didn't list a gateway in your split list for a cable 'modem' for your Xfinity internet service?