After many years I finally found a fix for my livetv (live tv) / watch TV problems. I am running 6.04 and my video source is comcast digital cable using a clear QAM HDHOMERUN tuner. After much digging I found out that for digital cable you must set the following columns in the channel table to the following values if you are using a clear QAM tuner:

tvformat must be set to ATSC

atsc_major_chan must be set to 0

atsc_minor_chan must be set to 0



Some of my channels obeyed these rules; some did not. It winds up that LIVETV would fail only when tuning to channels that did not follow these rules. I ran a script to reset those 3 columns to the correct values and LIVETV works properly now! If you are having this problem here is the sql statement to make these changes.

Caution#1: Always make a database backup before making changes to your database.

Caution#2: This only applies if you are using a clear QAM tuner without a cable card.





An easy way to see if you have incorrect values in these columns is to examine the output of the following command:



I hope this helps someone else!

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Marc

The views expressed are my own and do not necessarily reflect the views of my employer.

What symptoms does this fix?

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Paul O'Flynn

Don't recall the exact error message, but when tuning to certain channels a dialog box would pop up with an error message, I would hit "OK" and I would be kicked back to the main mythtv menu.

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Marc

The views expressed are my own and do not necessarily reflect the views of my employer.