id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc	mlocked
11960	Live TV Fails to switch to Analog tuner after digital tuner used	cube1@…		"Capture Card:  Hauppauge HVR-2250

Something which (with some fussing) worked OK under mythtv 0.25 is failing under 0.27 (mythbuntu 12.04.3, then upgraded to MythTV 0.27)

That it worked under MythTV 0.25 should deal with questions such as whether I have the right firmware, drivrs, etc. (I hope)

If I have a configuration with a single analog tuner, it works fine.  If I have a configuration with a single digital tuner, it works fine.

If I have a configuration with both (whether I point them at the same tuner of the two on this card, or use different ones), I can tune analog OK the first time, but once I have tuned to a digital station, if I then go back and try to tune on the analog tuner, the front end goes black, and then eventually responds with a message which is approximately (sorry, but it is a real hassle to recreate the message yet again) ""No A/V Decoder"".  It appears that in these cases the live TV ring buffer file does not get created on the backend.

The digital side is set to No EIT and open on demand (that was necessary to make it work OK under 0.25, and seems to still be necessary under 0.27, or ones gets a ""blue screen"")

The message in the frontend log reads:


CoreContext ringbuffer.cpp:1035 (WaitForReadsAllowed) RingBuf(/video1/livetv/5005_20131127225009.mpg): Taking too long to be allowed to read..
Nov 27 16:50:11  mythfrontend.real: last message repeated 5 times
Nov 27 16:50:11 mythtemp mythfrontend.real: mythfrontend[5223]: E CoreContext mythplayer.cpp:963 (OpenFile) Player(0): Couldn't find an A/V decoder for: '/video1/livetv/5005_20131127225009.mpg'
Nov 27 16:50:11 mythtemp mythfrontend.real: mythfrontend[5223]: E CoreContext mythplayer.cpp:2768 (StartPlaying) Player(0): Unable to open video file.

The backend log from the same timeframe reds

channame(WMTV) startts(Wed Nov 27 22:30:00 2013) endts(Wed Nov 27 23:00:00 2013)#012             recstartts(Wed Nov 27 22:50:08 2013) recendts(Wed Nov 27 23:00:00 2013)#012             title(Jeopardy!)): recording already exists...
Nov 27 16:50:11 mythtemp mythbackend: mythbackend[5193]: W DeviceReadBuffer recorders/DeviceReadBuffer.cpp:555 (Poll) DevRdB(/dev/video0): Poll took an unusually long time 2502 ms
Nov 27 16:50:11 mythtemp mythbackend: mythbackend[5193]: I TVRecEvent tv_rec.cpp:1048 (HandleStateChange) TVRec[9]: Changing from WatchingLiveTV to None

(More of log attached as file)

At the very least, the message from the front-end is misrepresenting the problem.

"	Bug Report - General	closed	minor	unknown	MythTV - General	0.27-fixes	medium	Duplicate	LiveTV Analog Digital Tuner		0