id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc	mlocked
11427	LiveTV/Recording doesn't work with CBand LNBs from 0.25 onwards	nick.marshall@…		"When using mythtv 0.25 or 0.26 if you follow through all of the steps in setting it up with a ku band LNB myth will work fine and all epg data will be populated.
Works fine for mythtv 0.25/0.26.

If you do the same thing with a cband lnb it will locate the channels and add them to the database as expected but when trying to watch tv or record tv it will be unable to.


Recording and watching tv from a cband lnb does work in 0.24 however.

The issue is nearly identical to the one here: http://www.mentby.com/dg-mailing-list/

Cards tested on:
hauppage nova-s plus, hauppage nexus-s 


OS used:
Mythbuntu 12.04,
Centos 6.3 

Issue also occurs on multiple different lnbs and satellites. Signal strength (90-99%)

mythbackend -v siparser,eit,channel produces this:


{{{
2013-02-27 12:02:32.300751 I  DVBChan(1:/dev/dvb/adapter0/frontend0): Opening DVB channel
2013-02-27 12:02:32.307593 I  ChannelBase(2): Input #2: 'DVBInput' schan(401) sourceid(1) ccid(2)
2013-02-27 12:02:32.307647 I  ChannelBase(2): Current Input #2: 'DVBInput'
2013-02-27 12:02:32.309835 I  DTVChan(/dev/dvb/adapter0/frontend0): SetChannelByString(401):
2013-02-27 12:02:32.316999 I  DTVChan(/dev/dvb/adapter0/frontend0): SetChannelByString(401): failure
2013-02-27 12:02:32.317066 I  ChannelBase(2): Looking for startchannel '401' on input 'DVBInput'
2013-02-27 12:02:32.324487 I  ChannelBase(2): Found startchannel '401' on input 'DVBInput'
2013-02-27 12:02:32.337698 I  Found 0 distinct programid authorities

}}}

and when it tries to get EIT data

{{{
2013-02-27 12:03:35.314224 I  EITScanner (1): StartActiveScan called with 1 multiplexes
2013-02-27 12:03:35.599338 I  TVRec(1): SetChannel(401) -- begin
2013-02-27 12:03:35.601670 I  DVBChan(1:/dev/dvb/adapter0/frontend0): Opening DVB channel
2013-02-27 12:03:35.601731 I  DTVChan(/dev/dvb/adapter0/frontend0): SetChannelByString(401):
2013-02-27 12:03:35.609460 I  DTVChan(/dev/dvb/adapter0/frontend0): SetChannelByString(401): failure
2013-02-27 12:03:35.609520 E  TVRec(1): Failed to set channel to 401. Reverting to kState_None
2013-02-27 12:03:35.610040 I  TVRec(1): SetChannel(401) -- end
2013-02-27 12:03:35.610086 I  EITScanner (1): Now looking for EIT data on multiplex of channel 401
}}}

And the frontend when trying to watch tv:

{{{
2013-02-27 12:06:04.507525 N  TV: Spawning LiveTV Recorder -- begin
2013-02-27 12:06:04.561636 N  TV: Spawning LiveTV Recorder -- end
2013-02-27 12:06:04.564137 E  GetEntryAt(-1) failed.
2013-02-27 12:06:04.564199 E  It appears that your backend may be misconfigured.  Check your backend logs to determine whether your capture cards, lineups, channels, or storage configuration are reporting errors.  This issue is commonly caused by failing to complete all setup steps properly.  You may wish to review the documentation for mythtv-setup.
2013-02-27 12:06:04.581668 E  EntryToProgram(0@Thu Jan 1 12:00:00 1970) failed to get pginfo
2013-02-27 12:06:04.581755 E  TV: HandleStateChange(): LiveTV not successfully started
2013-02-27 12:06:04.584038 E  TV: LiveTV not successfully started
2013-02-27 12:06:04.637334 I  TV: Main UI disabled.

}}}

Backend from the same time:

{{{
2013-02-27 12:06:04.513256 I [2073/2083] TVRecEvent tv_rec.cpp:1030 (HandleStateChange) - TVRec(1): Changing from None to WatchingLiveTV
2013-02-27 12:06:04.539601 I [2073/2083] TVRecEvent tv_rec.cpp:3503 (TuningCheckForHWChange) - TVRec(1): HW Tuner: 1->1
2013-02-27 12:06:04.557845 E [2073/2083] TVRecEvent tv_rec.cpp:3689 (TuningFrequency) - TVRec(1): Failed to set channel to 401. Reverting to kState_None
2013-02-27 12:06:04.557977 I [2073/2083] TVRecEvent tv_rec.cpp:1030 (HandleStateChange) - TVRec(1): Changing from WatchingLiveTV to None
2013-02-27 12:08:34.658128 E [2073/2083] TVRecEvent tv_rec.cpp:3689 (TuningFrequency) - TVRec(1): Failed to set channel to 401. Reverting to kState_None
}}}


Looks like the frontend failures are due to not being able to tune to the channel after running the mythtv-setup.

note- all of this works fine for 0.24 just the newer versions don't work.

Also in New Zealand if that's any use.
"	Bug Report - General	closed	minor	unknown	MythTV - General	0.26-fixes	medium	Abandoned	cband, livetv, fail,myth		0