maybe this error is related to the connection from tvheadend tothe digibit r1. In the log of the digibit I can see the following while trying to stream a channel that does not work:
[9602][2487652.843][s2i-streamer-stream-allocator][0x631998][free][FE ref: 0,0,0,0][FE freq: -1,-1,-1,-1]
[9603][2487660.050][s2i-streamer-stream-allocator][0x631998][allocate][FE ref: 1,0,0,0][FE freq: 11464,-1,-1,-1][stream-demux map: 2338-0,1]
[9604][2487660.053][s2i-streamer-stream-allocator][0x631998][openSource][FE ref: 1,0,0,0][FE freq: 11464,-1,-1,-1][stream-demux map: 2338-0,1]
[9605][2487661.867][rtsp-server][0x663e00][updatePidsAllocation:WARNING:streamer/rtsp/rtspstreamserver.cpp:2424][maximum streams number reached!]
[9606][2487661.952][s2i-streamer-stream-allocator][0x631998][closeSource][FE ref: 1,0,0,0][FE freq: 11464,-1,-1,-1][stream-demux map: 2338-0,1]
[9607][2487661.952][s2i-streamer-stream-allocator][0x631998][free][FE ref: 0,0,0,0][FE freq: -1,-1,-1,-1]
[9608][2487665.751][s2i-streamer-stream-allocator][0x631998][allocate][FE ref: 1,0,0,0][FE freq: 10832,-1,-1,-1][stream-demux map: 2339-0,1]
[9609][2487665.754][s2i-streamer-stream-allocator][0x631998][openSource][FE ref: 1,0,0,0][FE freq: 10832,-1,-1,-1][stream-demux map: 2339-0,1]
[9610][2487668.217][rtsp-server][0x663e00][updatePidsAllocation:WARNING:streamer/rtsp/rtspstreamserver.cpp:2424][maximum streams number reached!]
[9611][2487668.279][s2i-streamer-stream-allocator][0x631998][closeSource][FE ref: 1,0,0,0][FE freq: 10832,-1,-1,-1][stream-demux map: 2339-0,1]
[9612][2487668.279][s2i-streamer-stream-allocator][0x631998][free][FE ref: 0,0,0,0][FE freq: -1,-1,-1,-1]
[9613][2487672.335][s2i-streamer-stream-allocator][0x631998][allocate][FE ref: 1,0,0,0][FE freq: 11464,-1,-1,-1][stream-demux map: 2340-0,1]
[9614][2487672.338][s2i-streamer-stream-allocator][0x631998][openSource][FE ref: 1,0,0,0][FE freq: 11464,-1,-1,-1][stream-demux map: 2340-0,1]
[9615][2487674.512][rtsp-server][0x663e00][updatePidsAllocation:WARNING:streamer/rtsp/rtspstreamserver.cpp:2424][maximum streams number reached!]
[9616][2487674.574][s2i-streamer-stream-allocator][0x631998][closeSource][FE ref: 1,0,0,0][FE freq: 11464,-1,-1,-1][stream-demux map: 2340-0,1]
[9617][2487674.574][s2i-streamer-stream-allocator][0x631998][free][FE ref: 0,0,0,0][FE freq: -1,-1,-1,-1]
[9618][2487685.665][s2i-streamer-stream-allocator][0x631998][allocate][FE ref: 1,0,0,0][FE freq: 10832,-1,-1,-1][stream-demux map: 2341-0,1]
[9619][2487685.669][s2i-streamer-stream-allocator][0x631998][openSource][FE ref: 1,0,0,0][FE freq: 10832,-1,-1,-1][stream-demux map: 2341-0,1]
[9620][2487692.174][s2i-streamer-stream-allocator][0x631998][closeSource][FE ref: 1,0,0,0][FE freq: 10832,-1,-1,-1][stream-demux map: 2341-0,1]
[9621][2487692.174][s2i-streamer-stream-allocator][0x631998][free][FE ref: 0,0,0,0][FE freq: -1,-1,-1,-1]
[9622][2487692.176][s2i-streamer-stream-allocator][0x631998][allocate][FE ref: 1,0,0,0][FE freq: 11464,-1,-1,-1][stream-demux map: 2342-0,1]
[9623][2487692.179][s2i-streamer-stream-allocator][0x631998][openSource][FE ref: 1,0,0,0][FE freq: 11464,-1,-1,-1][stream-demux map: 2342-0,1]
[9624][2487694.579][rtsp-server][0x663e00][updatePidsAllocation:WARNING:streamer/rtsp/rtspstreamserver.cpp:2424][maximum streams number reached!]
[9625][2487694.641][s2i-streamer-stream-allocator][0x631998][closeSource][FE ref: 1,0,0,0][FE freq: 11464,-1,-1,-1][stream-demux map: 2342-0,1]
[9626][2487694.642][s2i-streamer-stream-allocator][0x631998][free][FE ref: 0,0,0,0][FE freq: -1,-1,-1,-1]
[9627][2487698.579][s2i-streamer-stream-allocator][0x631998][allocate][FE ref: 1,0,0,0][FE freq: 10832,-1,-1,-1][stream-demux map: 2343-0,1]
[9628][2487698.583][s2i-streamer-stream-allocator][0x631998][openSource][FE ref: 1,0,0,0][FE freq: 10832,-1,-1,-1][stream-demux map: 2343-0,1]
[9629][2487707.077][rtsp-server][0x663e00][updatePidsAllocation:WARNING:streamer/rtsp/rtspstreamserver.cpp:2424][maximum streams number reached!]
[9630][2487707.140][s2i-streamer-stream-allocator][0x631998][closeSource][FE ref: 1,0,0,0][FE freq: 10832,-1,-1,-1][stream-demux map: 2343-0,1]
[9631][2487707.140][s2i-streamer-stream-allocator][0x631998][free][FE ref: 0,0,0,0][FE freq: -1,-1,-1,-1]
[9632][2487758.706][s2i-streamer-stream-allocator][0x631998][allocate][FE ref: 0,0,1,0][FE freq: -1,-1,10832,-1][stream-demux map: 2344-2,1]
[9633][2487758.719][s2i-streamer-stream-allocator][0x631998][openSource][FE ref: 0,0,1,0][FE freq: -1,-1,10832,-1][stream-demux map: 2344-2,1]
[9634][2487769.994][s2i-streamer-stream-allocator][0x631998][closeSource][FE ref: 0,0,1,0][FE freq: -1,-1,10832,-1][stream-demux map: 2344-2,1]
[9635][2487769.994][s2i-streamer-stream-allocator][0x631998][free][FE ref: 0,0,0,0][FE freq: -1,-1,-1,-1]
I have attached a screenshot of my digibit-config and digibit-tuner-config in tvheadend. Maybe here is something wrong?