After tonight's events, the following are the parameters of this issue as I understand them:
Once "the problem" is manifest, it is thereafter impossible to watch HBO or Cinemax programming unless you record it first and watch the recording later. If you attempt to tune to one of these HBO or Cinemax channels while "the problem" is manifest, you will see a pop-up alert that says the receiver has detected that the TV does not conform to HDCP, and that this channel's programming requires HDCP, so viewing it has been disallowed.
"The problem" occurs at random, can occur multiple times each day if you clear it.
Once it happens, the "hdcp_state" (in menu/settings/diagnostics/HDMI/HDCP) changes from "ENCRYPTED" to "AUTH PENDING".
Things I have tried which WILL clear "the problem":
1) while THE 922 and TV are running, unplug either end of the HDMI cable and plug it back in.
2) disconnect AC power from 922 and re-apply it.
The trouble with #1 (aside from annoyance) is that it will eventually wear out the HDMI connector contacts.
The trouble with #2 (aside from annoyance and potential damage to 922 disk structure) is that the 922 takes FOREVER to wake up.
Things I have tried which WILL NOT clear the problem:
A) power off/on (via remote) the 922.
power off/on(via remote) the TV.
C) disconnect AC power from TV and re-apply it.
I do not know anything about HDMI protocol, but I would think that "C" above should look the same to the 922 as #1 above. How does the 922 detect TV power cycling and HDMI cable unplug/replug differently? Does anyone know?
To DISH - if you can't be certain you've fixed this issue, please add a "retry" selection to the pop-up about the TV not conforming to HDCP, that when selected causes the 922 to reinitialize HDMI just as though the cable has been unplugged/replugged. This way your user (me) will not be cursing your name each time he has to get up, move the speaker, get behind the entertainment center and cycle the $&?!'k HDMI cable!!!!!!