[mythtv-users] DVB Failing at same time each week!

[David Watkins]

On 8 March 2013 21:54, Dave Sexton <list-mythtv-users at jack.org.uk> wrote:
> Hi List,
>
>         I have a repeating problem that started three weeks ago.
>
>         I have two Hauppauge Nova-TD-500 dual tuner DVB-T cards, MythTV 0.25.2,
> Kernel 3.2.0 - Ubuntu 12.04 (Precise). Each tuner is configured to record up to
> two simultaneous streams.
>
>         At 9PM on a Friday, I attempt to record "8 out of 10 cats" on Channel 4
> and "The Mentalist" on Channel 5. For the last three weeks (since the start of
> this series of the Mentalist), the entire DVB subsystem seems to hang. Myth
> stops being able to record anything, it fails to perform any action with the
> DVB cards. I get entries like th following in the logs :-
>
> Mar  8 20:57:33 wintermute mythbackend[32470]: I Scheduler scheduler.cpp:2514
> (HandleRecordingStatusChange) Tuning recording: "8 Out of 10 Cats": channel
> 2004 on cardid 2, sourceid 2
> Mar  8 20:57:33 wintermute mythbackend[32470]: E DVBRead
> dtvsignalmonitor.cpp:321 (HandlePAT) DTVSM(/dev/dvb/adapter0/frontend0):
> Program #25664 not found in PAT!#012Program Association Section#012 PSIP
> tableID(0x0) length(4
> 5) extension(0x2012)#012      version(1) current(1) section(0)
> last_section(0)#012      tsid(8210) programCount(9)#012  program number     0
> has PID 0x0010#012  program number  8274 has PID 0x0100#012  program number
> 8325 h
> as PID 0x0104#012  program number  8384 has PID 0x0102#012  program number
> 8452 has PID 0x010b#012  program number  8448 has PID 0x0109#012  program
> number  8442 has PID 0x0110#012  program number  8500 has PID 0x0121#012
> program number  8374 has PID 0x0122
> Mar  8 20:57:33 wintermute mythbackend[32470]: E DVBRead
> mpeg/mpegstreamdata.cpp:819 (ProcessPAT) ProcessPAT: Program not found in PAT.
> Rescan your transports.
> Mar  8 20:57:33 wintermute mythbackend[32470]: E DVBRead
> mpeg/mpegstreamdata.cpp:425 (CreatePATSingleProgram) Desired program #25664
> not found in PAT.#012#011#011#011Cannot create single program PAT.
> Mar  8 20:57:33 wintermute mythbackend[32470]: I CoreContext scheduler.cpp:637
> (UpdateRecStatus) Updating status for "8 Out of 10 Cats" on cardid 2 (Tuning
> => Recording)
>
> and lots of :
>
> DVBRead mpeg/mpegstreamdata.cpp:362 (AssemblePSIP) Error: offset>181, pes
> length & current cannot be queried
>
> When checking just minutes beforehand, the program listings are up to date and
> all tuners can tune to the required channels.
>
> The only thing I can think of is that something is being transmitted at that
> time which is killing the DVB cards.
>
> Is anyone else having this kind of problem?


Yeah, I've had something similar.  I think this is your problem

> Program not found in PAT. Rescan your transports.

I think it means that your channel information is incorrect and the
channel that it's trying to record doesn't exist in the DVB stream.

I'd try rescanning your channels.

I've a suspicion that MythTV doesn't handle this sort of error very
well.  In my case it silently recorded a different programme off what
appeared to be a random channel.  Ultimately though I think it's a
channel configuration problem.

Good Luck