[mythtv-commits] Ticket #8099: Backend fails to tune a few HD channels from hdhomerun (but VLC plays them fine)

[MythTV]

#8099: Backend fails to tune a few HD channels from hdhomerun (but VLC plays them
fine)
--------------------------------------------+-------------------------------
 Reporter:  Derek Atkins <warlord@…>        |       Owner:  danielk   
     Type:  defect                          |      Status:  new       
 Priority:  major                           |   Milestone:  unknown   
Component:  MythTV - Recording              |     Version:  0.22-fixes
 Severity:  high                            |     Mlocked:  0         
--------------------------------------------+-------------------------------
 I just moved, upgraded my myth to 0.22, and reconfigured my system to use
 the HDHR on Comcast Cable.  I've upgraded the HDHR firmware to the most
 recent version (20100213), and when I run the hdhomerun_config_gui with
 VLC I can watch every channel just fine!  However MythTV cannot tune a
 couple channels.

 When I try to tune the channel on MythTV I get:

    Signal 91% | (LAM_V) Partial Lock

 The mythtv database matches what I see the HDHR Config GUI, that this
 channel (803, WSBDT) is on 98.3.

 I have three channels on this physical channel and two of them have
 problems (the other failing channel is number 804, WAGADT, on 98.804,
 whereas WSBDT2 on 98.248 is just fine).  I suppose there could be a tuning
 problem on this major channel but more likely I think Myth is not reading
 the PMT correctly.  I've attached the backend log with -v
 channel,record,siparser, which shows that it's reading the streams:

 {{{
  programCount: 3
   program number   804 has PID 0x  30   data  0x 3 0x24 0xe0 0x30
   program number     3 has PID 0x  32   data  0x 0 0x 3 0xe0 0x32
   program number   248 has PID 0x  40   data  0x 0 0xf8 0xe0 0x40

  Stream #0 pid(0x33) type(video-mpeg2  0x2)
  Stream #1 pid(0x36) type(audio-ac3  0x81)
   ISO-639 Language: code(eng) canonical(eng) eng(English)
  Stream #2 pid(0x37) type(private-data  0x6)
  Stream #3 pid(0x38) type(private-sec  0x5)
  Stream #4 pid(0x39) type(private-sec  0x5)
 }}}

 However then the log shows some failures looking for the PMT:

 {{{
 2010-02-22 08:52:15.659 ATSCStreamData::HandleTables(): Unknown table 0xc0
 2010-02-22 08:52:15.669 SM(192.168.248.4-0)::AddFlags: Seen(PMT,) Match()
 Wait()
 2010-02-22 08:52:15.669 DTVSM(192.168.248.4-0)::GetStatusList: WaitForPMT
 seen(1) matching(1)
 2010-02-22 08:52:15.726 DTVSM(192.168.248.4-0) Error: Wrong PMT;
 pmt->pn(248) desired(3)
 2010-02-22 08:52:15.730 SM(192.168.248.4-0)::AddFlags: Seen(PMT,) Match()
 Wait()
 2010-02-22 08:52:15.732 DTVSM(192.168.248.4-0) Error: Wrong PMT;
 pmt->pn(804) desired(3)

 }}}

 And then lots more of the Unknown Table errors.  The full log is attached.

-- 
Ticket URL: <http://svn.mythtv.org/trac/ticket/8099>
MythTV <http://www.mythtv.org/>
MythTV