[mythtv-commits] Ticket #945: Live TV: DVB Channel tuning issues

[MythTV]

#945: Live TV: DVB Channel tuning issues
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 Reporter:  homer_simpson_loves_u at hotmail.com  |       Owner:  ijr 
     Type:  defect                             |      Status:  new 
 Priority:  minor                              |   Milestone:  0.19
Component:  mythtv                             |     Version:  head
 Severity:  medium                             |  
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 I intend to add more details later. My laptop has freaked out on me so I
 can't capture logs easily at this point.

 This is a repository for a few minor problems (that may be related to a
 major problem also documented here)

 Problem 1 (minor): When Live TV is first selected, often tuning doesn't
 work on the first channel (default channel of default input of default
 card (0). A "No Lock" message is displayed with high error count (over
 30000) on the OSD.

 The work around has been (since 7607) to tune a channel from another
 switch input, forcing an update to what ever is broken. Often a lock is
 achieved and with older versions everything would work fine from there.
 However there are two issues I've observed from that.

 1. Sometimes the other channel does not lock. An error message, "Can't
 find PID (whatever)" appears in the log. This is a reoccuring theme, it
 happens often with latest SVN even after first lock. See below for the
 major issue related to this.
 2. Often when the "no lock" message comes up it has the wrong channel and
 EPG information on the OSD for the channel the frontend is attempting to
 tune. Sometimes when I get a lock the OSD information is wrong. When the
 OSD info is wrong, it displays the channel and EPG data for the previously
 tuned (or attempted to tune) channel.

 Problem 2 (minor): The current tuned channel is not being updated
 faithfully under all circumstances. This is hard to describe. If I tune a
 channel, get a lock, and then change channels in succession each time
 getting a lock, and then exit live TV and re-enter live TV, the channel
 that gets tuned is often not the last channel viewed, but one from a few
 channel changes before. I hope that makes sense. This used to be much
 worse as it never updated the default channel in the database, now it only
 seems to be updating it once in a while.

 Problem 3 (major): As of the late SVN 8400s channel changing has become
 unreliable with repeated "Can't find PID" error messages in the backend
 log. The only work around is to scroll to a channel on a different input
 and cross your fingers or a more likely fix is to exit live tv and restart
 it. Lock is often restored however sometimes to a channel that had been
 previously viewed, not the one that had most previously locked.

 The third problem is difficult to clasify. Its been happening on and off
 when starting live tv for quite a while but once a lock was established
 the problem went away. With latest SVN it is no longer that easy to work
 around.

 I can capture logs, just tell me what to look for.

 Homer

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Ticket URL: <http://cvs.mythtv.org/trac/ticket/945>
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