sorry, false alarm. Just in case this happens to anybody else, my issue was that some channels on a specific multiplex (perhaps the whole multiplex?) had moved to a different multiplex. Mythtv still had the old entries of channels in mysql even after clearing all channels and doing a full re-scan using mythtv-setup.
After wiping all entries from the channel table and doing another channel scan, things are working again now.
I kept thinking it was something related to mythtv tunning but it was just some confusion due to old channel entries in the database.
sorry, false alarm. Just in case this happens to anybody else, my issue was that some channels on a specific multiplex (perhaps the whole multiplex?) had moved to a different multiplex. Mythtv still had the old entries of channels in mysql even after clearing all channels and doing a full re-scan using mythtv-setup.
After wiping all entries from the channel table and doing another channel scan, things are working again now.
I kept thinking it was something related to mythtv tunning but it was just some confusion due to old channel entries in the database.