https://bugs.kde.org/show_bug.cgi?id=408004

            Bug ID: 408004
           Summary: No display: ATSC tuner appears to work, but "mjpeg
                    demux error: cannot peek"
           Product: kaffeine
           Version: 2.0.17
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: mchehab+sams...@kernel.org
          Reporter: awf...@charter.net
  Target Milestone: ---

ATSC TV tuner appears to work, Channels show lock and good SNR on known good
station.

gets [00007fe81001d3e0] mjpeg demux error: cannot peek

STEPS TO REPRODUCE
1. Start Kaffeine using known scan tables from Fedora 29 which was functional
2. Select Digital TV; says Playing in upper left corner, station info and time
display
3. 

OBSERVED RESULT

Black screen, randomly *does* start to function but very rarely.


27-05-19 13:13:42.059 [Info    ] kaffeine.dvb: Using built-in dvb device
manager
27-05-19 13:13:42.315 [Info    ] kaffeine.dev: Found dvb device
P1131713317de7352: Nextwave NXT200X VSB/QAM frontend
27-05-19 13:13:42.524 [Warning ] kf5.kio.core: "Could not enter folder tags:/."
[00007fe81001d3e0] mjpeg demux error: cannot peek
[00007fe82901dbe0] mjpeg demux error: cannot peek
[00007fe82901df50] mjpeg demux error: cannot peek
[00007fe82901e1b0] mjpeg demux error: cannot peek
[00007fe82901e1b0] mjpeg demux error: cannot peek
[00007fe82901e1b0] mjpeg demux error: cannot peek


EXPECTED RESULT
Ran well in Fedora 29. Online updated to Fedora 30. Other video player like VLC
works with tuner and plays ATSC channel.


SOFTWARE/OS VERSIONS

Linux/KDE Plasma: 
Up to date Fedora 30, x86_64. 

ADDITIONAL INFORMATION

58930.143142] radeon_dp_aux_transfer_native: 32 callbacks suppressed <repeated
many times>

In DMesg: [131517.358412] dvb_frontend: dvb_frontend_get_frequency_limits:
frequency interval: tuner: 0...0, frontend: 54000000...860000000

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