Try rerunning a channel scan. You'll have to go back into mythtv-setup. I forget how to get there in Mythbuntu if it's any different than running "mythtv-setup" from a terminal. From the error log I'm seeing that the channel you're trying to access is being flagged as encrypted. Sounds like something changed on your cable provider's end. So, rerun a channel scan, then do a mythfilldatabase. See if that helps.
2/15/14 at 12:57am