[mythtv-users] Can't tune to a particular DVB-S multiplex with one card but can with another conected to same source.

Andre mythtv-list at dinkum.org.uk
Wed Dec 19 11:14:01 UTC 2012


On 14 Dec 2012, at 23:40, Stephen Robertson wrote:

> Hi,
> 
> I've got a strange problem that I don't know how to diagnose.
> 
> One multiplex appears to not be able to be tuned by one of my cards
> but the other doesn't have a problem.  This applies to both scheduled
> recordings and live TV.
> 
> The cards are Hauppage Nova-HD-S2 and Turbosight TBS8922.  The
> Hauppage is the one that is having problems.
> 
> Both are connected to the same source within Myth (as well as
> physically to inputs on the same quad LNB), so if I understand things
> correctly are using the same tuning information.
> 
> The multiplex I am having problems with (as far as I can figure from
> http://www.lyngsat.com/Eutelsat-28A-and-Astra-1N-2A-2B.html) is on
> 10714H (Channel 4, Film4, Film+1 More 4 UK +1) (Freesat in the UK)

This sounds like it might be related to my situation.

I used to have a similar problem with a Satix S2 dual tuner and a Nova HD-S2, I found that if I did my scanning using the Nova HD-S2 I was able to tune everything with any tuner if I used the Satix S2 I had problems with CH4HD and BBC HD. The BBC HD problem disappeared when they changed their modulation recently but Ch4HD remained a problem.

At one stage it was necessary to scan with the Satix the go back and re-scan BBC HD and CH4HD muxes with the Nova HD!

I believe the problem I saw is related to different handling of auto FEC settings in different drivers, it may be possible to tickle the database entry for this mux and add the correct FEC or change to Auto if your problem is the other way around.

Might not be your problem but it sounds similar enough to be worth a try.

I don't have the problem any more because the different cards are used by different sources so I don't know if 10714H is affected in the same way.

Andre

> 
> The backend log is below.  Are there other verbosity options that
> would be useful to try?
> 
> The entry at 23:24:02 I think is when I changed channel.
> adaptor1(TBS8922) seems to work, adaptor2(Nova-HD-S2) is the one with
> the problem.
> 
> Thanks
> Stephen
> 
> Dec 14 23:22:16 bressay  mythbackend[5832]: I HouseKeeping
> housekeeper.cpp:221 (RunHouseKeeping) Running housekeeping thread
> Dec 14 23:22:58 bressay  mythbackend[5832]: I ProcessRequest
> mainserver.cpp:1395 (HandleAnnounce) MainServer::ANN Playback
> Dec 14 23:22:58 bressay  mythbackend[5832]: I ProcessRequest
> mainserver.cpp:1397 (HandleAnnounce) adding: bressay as a client
> (events: 0)
> Dec 14 23:22:58 bressay  mythbackend[5832]: I TVRecEvent
> tv_rec.cpp:1043 (HandleStateChange) TVRec(1): Changing from None to
> WatchingLiveTV
> Dec 14 23:22:58 bressay  mythbackend[5832]: I TVRecEvent
> tv_rec.cpp:3562 (TuningCheckForHWChange) TVRec(1): HW Tuner: 1->1
> Dec 14 23:22:58 bressay  mythbackend[5832]: N CoreContext
> autoexpire.cpp:264 (CalcParams) AutoExpire: CalcParams(): Max required
> Free Space: 3.0 GB w/freq: 14 min
> Dec 14 23:23:00 bressay  mythbackend[5832]: N CoreContext
> autoexpire.cpp:264 (CalcParams) AutoExpire: CalcParams(): Max required
> Free Space: 3.0 GB w/freq: 14 min
> Dec 14 23:23:02 bressay  mythbackend[5832]: I ProcessRequest
> recorderbase.cpp:395 (GetKeyframePositions)
> RecBase(1:/dev/dvb/adapter1/frontend0):
> GetKeyframePositions(13,9223372036854775807,#1) out of 3
> Dec 14 23:23:02 bressay  mythbackend[5832]: I ProcessRequest
> recorderbase.cpp:395 (GetKeyframePositions)
> RecBase(1:/dev/dvb/adapter1/frontend0):
> GetKeyframePositions(13,9223372036854775807,#1) out of 3
> Dec 14 23:23:15 bressay  mythbackend[5832]: I TVRecEvent
> tv_rec.cpp:1043 (HandleStateChange) TVRec(1): Changing from
> WatchingLiveTV to None
> Dec 14 23:23:15 bressay  mythbackend[5832]: I TVRecEvent
> tv_rec.cpp:830 (FinishedRecording) TVRec(1):
> FinishedRecording(7422_2012-12-14T23:23:00Z) damaged
> recq:<RecordingQuality overall_score="0"
> key="7422_2012-12-14T23:23:00Z" countinuity_error_count="0"
> packet_count="55714">
>    <Gap start="2012-12-14T23:00:00Z" end="2012-12-14T23:23:00Z"
> duration="1380" />
>    <Gap start="2012-12-14T23:23:14Z" end="2012-12-14T23:50:00Z"
> duration="1605" />
> </RecordingQuality>
> Dec 14 23:23:15 bressay  mythbackend[5832]: I ProcessRequest
> mainserver.cpp:1395 (HandleAnnounce) MainServer::ANN Playback
> Dec 14 23:23:15 bressay  mythbackend[5832]: I ProcessRequest
> mainserver.cpp:1397 (HandleAnnounce) adding: bressay as a client
> (events: 0)
> Dec 14 23:23:15 bressay  mythbackend[5832]: I TVRecEvent
> tv_rec.cpp:1043 (HandleStateChange) TVRec(3): Changing from None to
> WatchingLiveTV
> Dec 14 23:23:15 bressay  mythbackend[5832]: I TVRecEvent
> tv_rec.cpp:3562 (TuningCheckForHWChange) TVRec(3): HW Tuner: 3->3
> Dec 14 23:23:15 bressay  mythbackend[5832]: N CoreContext
> autoexpire.cpp:264 (CalcParams) AutoExpire: CalcParams(): Max required
> Free Space: 3.0 GB w/freq: 14 min
> Dec 14 23:23:16 bressay  mythbackend[5832]: N CoreContext
> autoexpire.cpp:264 (CalcParams) AutoExpire: CalcParams(): Max required
> Free Space: 3.0 GB w/freq: 14 min
> Dec 14 23:23:19 bressay  mythbackend[5832]: I ProcessRequest
> recorderbase.cpp:395 (GetKeyframePositions)
> RecBase(3:/dev/dvb/adapter2/frontend0):
> GetKeyframePositions(18,9223372036854775807,#1) out of 3
> Dec 14 23:23:19 bressay  mythbackend[5832]: I ProcessRequest
> recorderbase.cpp:395 (GetKeyframePositions)
> RecBase(3:/dev/dvb/adapter2/frontend0):
> GetKeyframePositions(18,9223372036854775807,#2) out of 4
> Dec 14 23:24:02 bressay  mythbackend[5832]: I TVRecEvent
> tv_rec.cpp:3562 (TuningCheckForHWChange) TVRec(3): HW Tuner: 3->3
> Dec 14 23:24:03 bressay  mythbackend[5832]: N CoreContext
> autoexpire.cpp:264 (CalcParams) AutoExpire: CalcParams(): Max required
> Free Space: 3.0 GB w/freq: 14 min
> Dec 14 23:24:13 bressay  mythbackend[5832]: I TVRecEvent
> tv_rec.cpp:1043 (HandleStateChange) TVRec(3): Changing from
> WatchingLiveTV to None
> Dec 14 23:24:14 bressay  mythbackend[5832]: I TVRecEvent
> tv_rec.cpp:830 (FinishedRecording) TVRec(3):
> FinishedRecording(10211_2012-12-14T23:24:03Z) damaged
> recq:<RecordingQuality overall_score="0"
> key="7421_2012-12-14T23:23:16Z" countinuity_error_count="0"
> packet_count="220386">
>    <Gap start="2012-12-14T23:20:00Z" end="2012-12-14T23:23:16Z"
> duration="196" />
>    <Gap start="2012-12-14T23:23:57Z" end="2012-12-14T23:30:00Z"
> duration="362" />
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