[mythtv-commits] Ticket #4635: Mythfrontend segfault switching tuner cards

[MythTV]

#4635: Mythfrontend segfault switching tuner cards
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 Reporter:  brtab   |       Owner:  ijr    
     Type:  defect  |      Status:  new    
 Priority:  minor   |   Milestone:  unknown
Component:  mythtv  |     Version:  head   
 Severity:  medium  |     Mlocked:  0      
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 While investigating a problem in cycling through the tuner cards using the
 'Y' key on version 15741 mythfrontend segfaults. Below is information on
 the current card setup. B1 is the primary back end and B2 is the slave
 back end.

 Here is the cardinput table:
 mysql> select cardinputid,cardid,displayname,preference,recpriority from
 cardinput order by cardid;

 | cardinputid | cardid | displayname | preference | recpriority |
 1  1  B1A1T1  0  0, 2  2  B1A2T1  0  0, 8  3  B2A1T1  0  0, 3  4  B1HD0
 0  0, 4  5  B1DVB0  0  0, 5  6  B1HD1   0  0, 9  7  B2A2T1  0  0, 6  8
 B1A3T1  0  0, 7  9  B1A4T1  0  0

 B1A{1,2,3,4}T1 are PVR-250 installed in primary back end
 B1HD{0,1} are the tuners from an HDHomerun on the ethernet configured in
 the primary back end
 B1DVB0 is a pcHDTV5500 installed in primary back end
 B2A{1,2}T1 are the tuners from a PVR-500 installed in a slave back end

 With no recordings or other front ends running I am expecting to see the
 card B1A4T1 come up initially then B1A1T1, B1A2T1, B2A1T1, B1HD0, etc. The
 "Avoid conflicts between live TV and scheduled shows" is set as well as
 the "Allow live TV to move scheduled shows". It used to work so that the
 "Y" key selected the tuners down the table in cardid order since that is
 how the tuners were
 entered.

 But what is seen instead is this order: B1A4T1, B1HD0 and then B1A1T1,
 B1HD0. These last two are cycled between from then on. Exiting and
 restarting livetv restarts this cycle again.
 If there is another front end that is already using B1A4T1 the sequence
 starts at B1A3T1, cycles to B1HD0, and then loops on B1A1T1 and B1HD0.
 If there are recordings on B1A1T1, B1A2T1, and a front end on B1A4T1 the
 sequence starts at B1A3T1, cycles to B1HD0, and then loops on B2A1T1 and
 B1HD0.

 When I entered the tuners in mythtv-setup there was no additional setup
 done such as input groups or jockeying with priorities.

 Continuing to cycle through these cards results in the segfault. The above
 configuration information was posted to the user list to see if I have
 failed to configure something else that is needed or if this is the
 behavior that others are seeing as well.

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Ticket URL: <http://svn.mythtv.org/trac/ticket/4635>
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