Comment 6 for bug 126423

I've been seeing this issue with 0.21+fixes on Intrepid, using DVB-S (WinTV HVR-4000).

I discovered that deleting the zero-length files on the backend in /var/lib/mythtv/recordings/ would usually solve this issue.

Sometimes though, if the front-end has saved the last channel, and that channel has a tuning lock but no signal, it will cause the problem to recur as soon as "Watch TV" is initiated. The workaround is to alter the starting channel to one known to have a valid signal *before* using "Watch TV".