[mythtv-users] No Livetv on frontend without backend

Wed Apr 25 14:54:26 UTC 2007

> On 23/04/07, Noah Swint <nswint at hotmail.com> wrote:
>> > On 23/04/07, Noah Swint <nswint at hotmail.com> wrote:
>> >> I can't watch livetv on any of my frontends unless there is a backend
>> >> running on the machine.  When I select Watch TV. The screen flashes
>> then
>> >> goes back to the main menu.  Below is what is logged on my master
>> >> backend
>> >>
>> >> 2007-04-23 13:57:03.052 MainServer::HandleAnnounce Monitor
>> >> 2007-04-23 13:57:03.058 adding: sucrose as a client (events: 0)
>> >> 2007-04-23 13:57:03.059 MainServer::HandleAnnounce Monitor
>> >> 2007-04-23 13:57:03.060 adding: sucrose as a client (events: 1)
>> >>
>> >>
>> >> This is from the backend of slave machine that has a frontend as
>> well.
>> >> Nothing shows up on the master backend.
>> >>
>> >> 2007-04-23 14:23:27.498 MainServer::HandleAnnounce Playback
>> >> 2007-04-23 14:23:27.516 adding: mothra as a client (events: 0)
>> >> 2007-04-23 14:23:27.617 TVRec(17): Changing from None to
>> WatchingLiveTV
>> >> 2007-04-23 14:23:27.628 TVRec(17): HW Tuner: 17->17
>> >> VIDIOCGCHAN: Invalid argument
>
> Here card #17 seems to be having problems tuning, which will likely
> break LiveTV...
>
It's out of there.  I replaced it with a Kworld Global Terminator.
Followed the guide below.
http://www.mythtv.org/wiki/index.php/KWorld_Global_TV_Terminator
>> >> strange error flushing buffer ...
>> >
>> > You appear to have had very many (at least 17 from the TVRec msg)
>> > capture cards defined in MythTV. If you are trying to launch LiveTV
>> > and MythTV is picking a capture card that is not working properly -
>> > there seems to be an ivtv? error message in the log above - then
>> > LiveTV will fail. There is an option to avoid LiveTV/recording clashes
>> > which will choose the lowest priority TV card for watching LiveTV.
>>
>> It it working properly. It is a bit problematic with lost sound
>> occasionaly but was working while I was testing it.
>>
>> > How many capture cards do you have in all of your systems? When you
>> > try to watch LiveTV on a frontend and it fails, what do you see in the
>> > *frontend* logfile. Turn on playback logging in your frontends and
>> > record logging in your backends on your MythTV network.
>>
>> 6 Total.  I have logging enabled on all of the frontends The only saw of
>> the failing remote frontends was from below
>>
>> 2007-04-23 13:57:03.052 MainServer::HandleAnnounce Monitor
>> 2007-04-23 13:57:03.058 adding: sucrose as a client (events: 0)
>> 2007-04-23 13:57:03.059 MainServer::HandleAnnounce Monitor
>> 2007-04-23 13:57:03.060 adding: sucrose as a client (events: 1
>>
>> > If you are using an ivtv card, does it work outside of MythTV (i.e.
>> > command line or in mplayer)?
>>
>> Right now I have 1 PVR350 and 1 HDHomerun on the Master backend (Inputs
>> 1,15,16)  Making 3 tuners(2 for the hd homerun)
>> I have 3 slave backends each with 1 wintv card (Inputs 14,17,18). For a
>
> You need to look at the slave machine containing card input #17 as
> this seems to be the culprit. I would temporarily disable that card in
> mythtv-setup input connections and that machine's slave mythbackend
> process, and then restart the MythTV network, MBE first, followed by
> the slaves. Then check on your frontends that you can successfully
> fire up LiveTV, and then change amongst your available cards using the
> 'Y' key.
>
>> total of 6  I've had problems with 0.19 where my one of my cards would
>> stop working and it would have to be deleted and setup again in in
>> mythtv
>> setup.  That stopped with 0.20 and after 13 failures.
>>
>> The ivtv pvr350 captures data using mplayer.. as last I tested 2 years
>> ago
>> when I setup mythtv.
>>
>>
>> *** Something different happened just now *** Tuner 1 was in use and it
>> sent me to Tuner 16, which is my hdhomerun.  I was able to view on my
>> remote frontend without a backend.
>
> That's good news, as it means LiveTV can work, if given the chance -
> and it most likely card #17 is causing all the trouble.
>
>> 2007-04-23 16:16:22.306 MainServer::HandleAnnounce Monitor
>> 2007-04-23 16:16:22.334 adding: sucrose as a client (events: 0)
>> 2007-04-23 16:16:22.337 MainServer::HandleAnnounce Monitor
>> 2007-04-23 16:16:22.338 adding: sucrose as a client (events: 1)
>> 2007-04-23 16:16:22.340 Reloading backend settings
>> 2007-04-23 16:16:22.344 Received a remote 'Clear Cache' request
>> 2007-04-23 16:19:54.836 MainServer::HandleAnnounce Monitor
>> 2007-04-23 16:19:54.865 adding: sucrose as a client (events: 0)
>> 2007-04-23 16:19:54.875 MainServer::HandleAnnounce Monitor
>> 2007-04-23 16:19:54.893 adding: sucrose as a client (events: 1)
>> 2007-04-23 16:19:54.920 MainServer::HandleAnnounce Playback
>> 2007-04-23 16:19:54.922 adding: sucrose as a client (events: 0)
>> 2007-04-23 16:19:55.035 TVRec(16): Changing from None to WatchingLiveTV
>> 2007-04-23 16:19:55.045 TVRec(16): HW Tuner: 16->16
>
> At this stage, card input #16 is successfully recording.
>
> Please check card #17 are let us know if it's working. Test it outside
> of MythTV and ensure it is correctly configured in mythtvsetup.
>

I replaced #17 with another card.  It's about 2 months old so I don't know
what it's problem could be.  After following the guide to setup the Kworld
Global Terminator, I realized the problem with my audio going out on the
card in 0.19 may have been due to card automuting.  I added this to my
rc.local.
/usr/bin/v4lctl volume mute off
/usr/bin/v4lctl setattr automute off
/usr/bin/v4lctl setattr mute off

I may need to setup a cron job to periodically run these commands as I
don't get around to watching the programs for several days and I could
have 10 -15 programs recorded with no sound.

I'll pop #17 into a spare computer to see if I get the same problems. So
far so good.  Now I have too many tuners and not enough time to watch all
the recorded program.  Thanks for all the help.
> Nick
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