This is what my backend log looks like at the time:
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Nov 27 21:58:00 mythserver mythbackend: mythbackend[378165]: I TVRecEvent tv_rec.cpp:1057 (HandleStateChange) TVRec[17]: Changing from None to RecordingOnly
Nov 27 21:58:00 mythserver mythbackend: mythbackend[378165]: I TVRecEvent mythdbcon.cpp:419 (PurgeIdleConnections) New DB connection, total: 20
Nov 27 21:58:00 mythserver mythbackend: mythbackend[378165]: C CoreContext programinfo.cpp:257 (ProgramInfo) ProgramInfo(): Failed to find recorded entry for 0.
Nov 27 21:58:00 mythserver mythbackend: mythbackend[378165]: I TVRecEvent tv_rec.cpp:3662 (TuningFrequency) TVRec[17]: TuningFrequency
Nov 27 21:58:00 mythserver mythbackend: mythbackend[378165]: I TVRecEvent cardutil.cpp:1170 (SetDeliverySystem) CardUtil[17]: Set delivery system: DVB-T2
Nov 27 21:58:00 mythserver mythbackend: mythbackend[378165]: I Scheduler scheduler.cpp:2880 (HandleRecordingStatusChange) Tuning recording: Parasite: channel 51420 on cardid [17], sourceid 1
Nov 27 21:58:02 mythserver mythbackend: mythbackend[378165]: E HttpServer101 programinfo.cpp:2524 (GetPlaybackURL) ProgramInfo(51420_20211127215800.ts): GetPlaybackURL: '51420_20211127215800.ts' should be local, but it can not be found.
Nov 27 21:58:14 mythserver mythbackend: mythbackend[378165]: E TVRecEvent tv_rec.cpp:3967 (TuningSignalCheck) TVRec[17]: TuningSignalCheck: Hit pre-fail timeout
Nov 27 21:58:20 mythserver mythbackend: mythbackend[378165]: W TVRecEvent tv_rec.cpp:3995 (TuningSignalCheck) TVRec[17]: TuningSignalCheck: taking more than 20000 ms to get a lock. marking this recording as 'Failing'.
Nov 27 21:58:20 mythserver mythbackend: mythbackend[378165]: W TVRecEvent tv_rec.cpp:4000 (TuningSignalCheck) TVRec[17]: See 'Tuning timeout' in mythtv-setup for this input
Nov 27 21:58:20 mythserver mythbackend: mythbackend[378165]: I CoreContext scheduler.cpp:706 (UpdateRecStatus) Updating status for Parasite on cardid [17] (Tuning => Failing)
I also get rather frequent errors in my backend log (typically a few per hour) that look like this:
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Nov 27 22:44:01 mythserver mythbackend: mythbackend[378165]: E TVRecEvent tv_rec.cpp:3954 (TuningSignalCheck) TVRec[20]: TuningSignalCheck: SignalMonitor timed out
Nov 27 22:44:01 mythserver mythbackend: mythbackend[378165]: I TVRecEvent tv_rec.cpp:3662 (TuningFrequency) TVRec[20]: TuningFrequency
Nov 27 22:44:01 mythserver mythbackend: mythbackend[378165]: I TVRecEvent cardutil.cpp:1170 (SetDeliverySystem) CardUtil[20]: Set delivery system: DVB-T2
Nov 27 22:44:01 mythserver mythbackend: mythbackend[378165]: E TVRecEvent tv_rec.cpp:3735 (TuningFrequency) TVRec[20]: Failed to set channel to . Reverting to kState_None
I'm using Mythbackend 31.0 on Ubuntu 20.04, with a TBS 6285 tuner card.
Any ideas what the problem might be and how I could go about fixing it?
Thanks
Adam