[mythtv-users] Live TV channel lock issue

William william_munson at comcast.net
Wed Jul 15 10:15:21 UTC 2009


Phill Edwards wrote:
>>> it's the backend that is getting a channel lock problem, not the
>>> frontend. The frontend is just passining on the information
>>>
>>> Usually it's due to a poor antenna signal, but as it works with other
>>> media player, it's puzzling
>>>
>>> the backend must show something in its log.. he'll need to post that
>>>       
>> Here's my backend log from a Live TV session I just tried:
>>
>> 2009-07-12 21:06:17.272 MainServer::HandleAnnounce Playback
>> 2009-07-12 21:06:17.275 adding: elm.edwards.home as a client (events: 0)
>> 2009-07-12 21:06:17.278 TVRec(11): Changing from None to WatchingLiveTV
>> 2009-07-12 21:06:17.285 TVRec(11): HW Tuner: 11->11
>> 2009-07-12 21:06:18.407 CalcParams(): Max required Free Space: 3.0 GB
>> w/freq: 8 min
>> 2009-07-12 21:06:25.649 TVRec(11): Changing from WatchingLiveTV to None
>> 2009-07-12 21:06:25.687 Finished recording The Pursuit of Happyness:
>> channel 1009
>> 2009-07-12 21:06:25.692 scheduler: Finished recording: The Pursuit of
>> Happyness: channel 1009
>>
>> Can't see anything that jumps out as a problem here to indicate why it
>> can't get a lock on the DVB-T signal.
>>
>> PS - my mythbackend logging in /etc/sysconfig/mythbackend is:
>> LOG_OPTS='important,general,schedule,record,channel'
>>     
>
> Sorry to give this one a bump. I was just wondering if anyone had any
> ideas how I can get to the bottom of this. Last time I tried to watch
> LiveTV the problem was even worse with it now being unable to lock
> onto a signal for any of my stations. Should I turn on all logging on
> mythbackend, perhaps, to see if that provides any clues?
>
> Regards,
> Phill
>   

You may have already tried this. In mythtv-setup set both capture card 
signal timeouts to a higher value. Doubling them usually works. 
Sometimes myth takes longer to lock than other times, depending on 
signal quality and other factors and this may explain why it sometimes 
works.

W.


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