Ok, here is what I triggered and the debug output:
I activated the debug log level:
> Loglevel debug: enabled
> Okt 08 21:15:55 eit: processing complete
> Okt 08 21:16:15 dvb: "/dev/dvb/adapter0" tuning to "418,000 kHz" (Autoscan)
> Okt 08 21:16:15 viasat_baltic: install table handlers
> Okt 08 21:16:15 uk_freesat: install table handlers
> Okt 08 21:16:15 eit: install table handlers
> Okt 08 21:16:16 eit: begin processing
> Okt 08 21:16:35 eit: processing cancelled
Now I started VLC and double-clicked one channel in the channel list:
> Okt 08 21:17:29 subscription: "HTTP" direct subscription to adapter: "Sundtek DVB-C (III)", network: "", mux: "602,000 kHz", provider: "ARD", service: "Das Erste HD", quality: 100
> Okt 08 21:17:29 Service: Sundtek DVB-C (III)/602,000 kHz/Das Erste HD: Status changed to [Hardware input]
> Okt 08 21:17:29 TS: Sundtek DVB-C (III)/602,000 kHz/Das Erste HD: Transport error indicator
> Okt 08 21:17:29 Service: Sundtek DVB-C (III)/602,000 kHz/Das Erste HD: Status changed to [Hardware input] [Input on service]
> Okt 08 21:17:29 Service: Sundtek DVB-C (III)/602,000 kHz/Das Erste HD: Status changed to [Hardware input] [Input on service] [Demuxed packets]
> Okt 08 21:17:29 Service: Sundtek DVB-C (III)/602,000 kHz/Das Erste HD: Status changed to [Hardware input] [Input on service] [Demuxed packets] [Reassembled packets]
No TV-Picture is displayed and the VLC progress bar is scrolling (waiting for transmission)
Now I double-click the same channel again and after round about 1 second I have a TV-picture. Additional the debug log output:
> Okt 08 21:19:55 subscription: "HTTP" direct subscription to adapter: "Sundtek DVB-C (III)", network: "", mux: "602,000 kHz", provider: "ARD", service: "Das Erste HD", quality: 100
> Okt 08 21:20:00 webui: Start streaming /stream/service/_dev_dvb_adapter0_Sundtek_DVB_C__III_602000000_283d
Now I press the forward button I the VLC control to the next channel:
> Okt 08 21:21:36 mkv: Live stream: Write failed -- Datenübergabe unterbrochen (broken pipe)
> Okt 08 21:21:36 webui: Stop streaming /stream/service/_dev_dvb_adapter0_Sundtek_DVB_C__III_602000000_283d, muxer reported errors
> Okt 08 21:21:36 dvb: "/dev/dvb/adapter0" tuning to "450,000 kHz" (Transport start)
> Okt 08 21:21:36 subscription: "HTTP" direct subscription to adapter: "Sundtek DVB-C (III)", network: "", mux: "450,000 kHz", provider: "ZDFvision", service: "ZDF HD", quality: 100
> Okt 08 21:21:36 subscription: "HTTP" unsubscribing
> Okt 08 21:21:36 Service: Sundtek DVB-C (III)/450,000 kHz/ZDF HD: Status changed to [Hardware input]
> Okt 08 21:21:36 TS: Sundtek DVB-C (III)/450,000 kHz/ZDF HD: Transport error indicator
> Okt 08 21:21:36 Service: Sundtek DVB-C (III)/450,000 kHz/ZDF HD: Status changed to [Hardware input] [Input on service]
> Okt 08 21:21:36 Service: Sundtek DVB-C (III)/450,000 kHz/ZDF HD: Status changed to [Hardware input] [Input on service] [Demuxed packets]
> Okt 08 21:21:36 Service: Sundtek DVB-C (III)/450,000 kHz/ZDF HD: Status changed to [Hardware input] [Input on service] [Demuxed packets] [Reassembled packets]
Then double-click on the channel (the TV-Picture is available)
> Okt 08 21:21:56 webui: Stop streaming /stream/service/_dev_dvb_adapter0_Sundtek_DVB_C__III_602000000_283d, timeout waiting for packets
> Okt 08 21:21:56 subscription: "HTTP" unsubscribing
> Okt 08 21:22:39 subscription: "HTTP" direct subscription to adapter: "Sundtek DVB-C (III)", network: "", mux: "450,000 kHz", provider: "ZDFvision", service: "ZDF HD", quality: 100
> Okt 08 21:22:40 webui: Start streaming /stream/service/_dev_dvb_adapter0_Sundtek_DVB_C__III_450000000_2b66
Stopping the TV by pressing stop button results to the following debug output:
> Okt 08 21:23:39 mkv: Live stream: Write failed -- Datenübergabe unterbrochen (broken pipe)
> Okt 08 21:23:39 webui: Stop streaming /stream/service/_dev_dvb_adapter0_Sundtek_DVB_C__III_450000000_2b66, muxer reported errors
> Okt 08 21:23:39 subscription: "HTTP" unsubscribing
Maybe some interesting information is the line:
> TS: Sundtek DVB-C (III)/450,000 kHz/ZDF HD: Transport error indicator