[mythtv-commits] Ticket #10741: Changing channels in LiveTV with HDPVR periodically fails on remote frontend

[MythTV]

#10741: Changing channels in LiveTV with HDPVR periodically fails on remote
frontend
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 Reporter:  mitch.capper@…  |           Type:  Bug Report - Hang/Deadlock
   Status:  new             |       Priority:  major
Milestone:  unknown         |      Component:  MythTV - General
  Version:  Master Head     |       Severity:  medium
 Keywords:                  |  Ticket locked:  0
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 When in liveTV on a remote frontend tuned with the HDPVR and changing to a
 new channel on the HDPVR the change to the new channel plays for 2 seconds
 or so then pauses then freezes.

 Problem is not reproducible with other inputs including dual tuner hd home
 run or hd5500.  Problem only occurs on remote frontends.  Problem does not
 occur with -prerecorded programs.  Problem does not happen with initially
 entering live-tv only when changing channels when the HDPVR is already
 tuned to a specific channel and is changed to another. Problem occurs if
 the guide is on screen or when changing just using the OSD with channel up
 and down.
 Frontend and backend should be are within 1 second of each other for time.
 Currently running on 568e161f39a33cde70ba1a74081ab46d28006a2c (may 4th)
 Has been happening for at least many months.

 Tried with signal_timeout set to 1000 and 4000 and channel_timeout at 3000
 and 12000 on the hdpvr card.

 I attached the log files running with -v all and without -v at all.  Both
 showing the same situation. For the non verbose a timeline is:
 16:36:28 - enter live TV and enters without problem on channel 280
 16:36:51 - hit guide button
 16:37:18 - changed to channel 278
 16:37:30 - playes a few seconds of video and freezes
 16:37:43 - plays another second of video completed frozen
 16:38:16 - kicked out of live TV video buffering error


 On the frontend running local to the backend it shows a similar behavior
 with a pause when changing channels after playing a 2-3 seconds of video
 but then it continues normally.

 For the verbose logs the channel change is at 16:21:36 channel was changed
 to a new channel(280)

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Ticket URL: <http://code.mythtv.org/trac/ticket/10741>
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