[mythtv-users] trouble with CSPAN channels

Greg Woods greg at gregandeva.net
Sat Mar 6 15:35:44 UTC 2021

I have Comcast, using an HD Homerun Prime with 3-tuner cable card to
receive channels via MythTV. I do not have any Comcast equipment other than
the cable card. I am using the XMLTV grabber via Schedules Direct to get
channel information.

The problem is that my wife cannot watch CSPAN2 or CSPAN3. The main SD
CSPAN channel works, but CSPAN-HD, CSPAN2 and CSPAN3 do not. Attempts to
watch them from the Program Guide result in backend log messages like these:

2021-03-06 08:28:00.048687 I [475758/531952] ProcessRequest
mainserver.cpp:1770 (HandleAnnounce) - MainServer: adding:
dodo.gregandeva.net(169ff10) as a client (events: 0)
2021-03-06 08:28:00.054366 I [475758/475811] TVRecEvent tv_rec.cpp:1057
(HandleStateChange) - TVRec[14]: Changing from None to WatchingLiveTV
2021-03-06 08:28:00.055100 I [475758/475811] TVRecEvent tv_rec.cpp:3662
(TuningFrequency) - TVRec[14]: TuningFrequency
2021-03-06 08:28:00.071572 I [475758/475811] TVRecEvent
recorders/hdhrstreamhandler.cpp:385 (Connect) - HDHRSH[14](13233503): Added
3 devices from 13233503
2021-03-06 08:28:00.088035 I [475758/475811] TVRecEvent
recorders/hdhrstreamhandler.cpp:402 (Connect) - HDHRSH[14](13233503):
Connected to device(13233503-0)
2021-03-06 08:28:00.098080 E [475758/475811] TVRecEvent
recorders/hdhrstreamhandler.cpp:484 (TunerSet) - HDHRSH[14](13233503):
DeviceSet(vchannel 1129): ERROR: invalid virtual channel
2021-03-06 08:28:00.098085 E [475758/475811] TVRecEvent tv_rec.cpp:3735
(TuningFrequency) - TVRec[14]: Failed to set channel to 1129. Reverting to
2021-03-06 08:28:00.098092 I [475758/475811] TVRecEvent tv_rec.cpp:1057
(HandleStateChange) - TVRec[14]: Changing from WatchingLiveTV to None
2021-03-06 08:28:00.099325 I [475758/531960] MythSocketThread(72)
mainserver.cpp:7858 (connectionClosed) - Playback sock(169ff10) '
dodo.gregandeva.net' disconnected

I have no idea how to troubleshoot this, or whether the problem is likely
with Comcast, my equipment, MythTV Software, or Schedules Direct. As far as
I know, the CSPAN channels are the only ones I should be able to get
(according to the published channel listings in my area) that I can't.

Thanks for any advice,
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