[mythtv-users] Backend seems to be crashing frontend -- recurring problem??

Allen Edwards allen.edwards at oldpaloalto.com
Sat Aug 16 23:18:49 UTC 2008


I am in deep trouble here.  My wife has put me on notice.

Myth will play two or three shows and then play garbage or lockup.  I 
repaired the DB and everything shows "OK"  Still problems.

Here is what I did as an official experiment.
1) Rebooted
2) Watched GMA and exited
3) Watched GMA and exited
4) Watched GMA and exited
5) Tried to watch GMA but noticed the preview failed
6) Tried to view GMA and it showed garbage instead of a picture exited
7) Tried to view GMA and frontend locked up.
8) Restarted frontend and it still doesn't work.
9) Turned computer off and back on, still doesn't work.
10) Ran mythweb -> settings -> database -> extended check:  All OK
11) Hit "optimize" and "Repair" anyway.
12) Frontend still locked up
13) Restarted X
14) Play GMA -- played fine.

this kind of thing has repeated many time so I have no doubt that the 
frontend will lock up after a couple of plays.

I don't get it?????

I took careful note of the time of each step so I could compare that to 
the log entries.

I looked at mythbackend.log and it looks fine to me
I looked at mysql.log and it looks fine
mythfrontend.log is full of errors after the box fails.
I have another frontend only machine, and it acts just like the main 
one.  It will not play once the main machine fails.

I googled all my error messages and found nothing useful.  I have been 
working on this sold for several hours and don't know what to do.

The shows seem fine, and the DB seems fine as I can view everything if I 
reboot  -- for a while.

All the errors are in the frontend log but two frontends don't work so 
it looks like a backend problem.  I am really stuck.

mythfrontend.log from a known good point into the errors.  The number of 
errors is larger than a couple full pages of excel can hold so I only 
have a small sample here.

Remember, this show will play fine if I reboot so it isn't damaged as 
far as I can tell.

Allen






2008-08-16 15:00:26.224 XMLParse::LoadTheme using 
/usr/share/mythtv/themes/Mythbuntu-8.04/ui.xml
2008-08-16 15:00:27.966 AFD: Opened codec 0x8309300, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:00:27.966 AFD: codec AC3 has 6 channels
2008-08-16 15:00:27.966 AFD: Opened codec 0x837eab0, id(AC3) type(Audio)
2008-08-16 15:00:32.155 AFD: Opened codec 0x8309300, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:00:32.155 AFD: codec AC3 has 6 channels
2008-08-16 15:00:32.155 AFD: Opened codec 0x837eab0, id(AC3) type(Audio)
2008-08-16 15:00:39.265 AFD: Opened codec 0x838f520, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:00:39.265 AFD: codec AC3 has 6 channels
2008-08-16 15:00:39.266 AFD: Opened codec 0x84fd6c0, id(AC3) type(Audio)
2008-08-16 15:00:51.272 AFD: Opened codec 0x8309300, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:00:51.272 AFD: codec AC3 has 6 channels
2008-08-16 15:00:51.273 AFD: Opened codec 0x837eab0, id(AC3) type(Audio)
2008-08-16 15:00:55.924 AFD: Opened codec 0x8309300, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:00:55.925 AFD: codec AC3 has 6 channels
2008-08-16 15:00:55.925 AFD: Opened codec 0x837eab0, id(AC3) type(Audio)
2008-08-16 15:00:59.663 Tuning to 'MPEG Program 1' pnum: 0x1 without CRC 
check on PMT
2008-08-16 15:00:59.704 mpegts_read_header: could not find any PMT's
2008-08-16 15:00:59.704 AFD Error: avformat err(-1) on 
av_open_input_file call.
2008-08-16 15:00:59.705 Couldn't open decoder for: 
myth://192.168.1.111:6543/1091_20080816140000.mpg
2008-08-16 15:01:11.710 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.722 AFD: Opened codec 0x8309300, id(MP2) type(Audio)
2008-08-16 15:01:11.724 AFD: Opened codec 0x837eab0, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:11.725 AFD: Opened codec 0x8384190, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:11.725 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.725 AFD: Opened codec 0x8325fc0, id(MP2) type(Audio)
2008-08-16 15:01:11.725 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.725 AFD: Opened codec 0x8305b10, id(MP2) type(Audio)
2008-08-16 15:01:11.726 AFD: Opened codec 0x82e5590, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:11.727 AFD: Opened codec 0x84e2e30, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:11.727 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.727 AFD: Opened codec 0x832a7d0, id(MP2) type(Audio)
2008-08-16 15:01:11.728 AFD: Opened codec 0x82ce6b0, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:11.728 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.729 AFD: Opened codec 0x837efd0, id(MP2) type(Audio)
2008-08-16 15:01:11.730 AFD: Opened codec 0x843a980, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:11.730 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.730 AFD: Opened codec 0x8355150, id(MP2) type(Audio)
2008-08-16 15:01:11.730 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.730 AFD: Opened codec 0x8538650, id(MP2) type(Audio)
2008-08-16 15:01:11.730 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.730 AFD: Opened codec 0x8384740, id(MP2) type(Audio)
2008-08-16 15:01:11.730 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.730 AFD: Opened codec 0x8307f90, id(MP2) type(Audio)
2008-08-16 15:01:11.730 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.730 AFD: Opened codec 0x830adf0, id(MP2) type(Audio)
2008-08-16 15:01:11.730 AFD: codec AC3 has 6 channels
2008-08-16 15:01:11.731 AFD: Opened codec 0x82aae20, id(AC3) type(Audio)
2008-08-16 15:01:11.731 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.731 AFD: Opened codec 0x8308450, id(MP2) type(Audio)
2008-08-16 15:01:11.732 AFD: Opened codec 0x8449fb0, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:11.732 AFD: codec MP2 has 1 channels
2008-08-16 15:01:11.732 AFD: Opened codec 0x861d780, id(MP2) type(Audio)
2008-08-16 15:01:11.732 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.732 AFD: Opened codec 0x8389990, id(MP2) type(Audio)
2008-08-16 15:01:11.734 AFD: Opened codec 0x8329bd0, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:11.734 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.734 AFD: Opened codec 0x8511940, id(MP2) type(Audio)
2008-08-16 15:01:11.734 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.734 AFD: Opened codec 0x8381420, id(MP2) type(Audio)
2008-08-16 15:01:11.734 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.734 AFD: Opened codec 0x82e34e0, id(MP2) type(Audio)
2008-08-16 15:01:11.734 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.734 AFD: Opened codec 0x843bf10, id(MP2) type(Audio)
2008-08-16 15:01:11.734 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.734 AFD: Opened codec 0x8376d70, id(MP2) type(Audio)
2008-08-16 15:01:11.734 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.734 AFD: Opened codec 0x8302820, id(MP2) type(Audio)
2008-08-16 15:01:11.734 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.734 AFD: Opened codec 0x8308960, id(MP2) type(Audio)
2008-08-16 15:01:11.734 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.734 AFD: Opened codec 0x837bf80, id(MP2) type(Audio)
2008-08-16 15:01:11.735 AFD: Opened codec 0x8374cd0, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:11.736 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.736 AFD: Opened codec 0x831d6b0, id(MP2) type(Audio)
2008-08-16 15:01:11.736 AFD: codec MP2 has 1 channels
2008-08-16 15:01:11.736 AFD: Opened codec 0x8326bb0, id(MP2) type(Audio)
2008-08-16 15:01:11.737 AFD: Opened codec 0x82e1490, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:11.737 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.737 AFD: Opened codec 0x82ffb10, id(MP2) type(Audio)
2008-08-16 15:01:11.737 AFD: codec MP2 has 2 channels
2008-08-16 15:01:11.737 AFD: Opened codec 0x82ff780, id(MP2) type(Audio)
2008-08-16 15:01:11.737 AFD: codec MP2 has 1 channels
2008-08-16 15:01:11.737 AFD: Opened codec 0x83022a0, id(MP2) type(Audio)
2008-08-16 15:01:11.738 AFD: Opened codec 0x86194c0, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:11.739 AFD: Opened codec 0x838f320, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:11.740 AFD: Opened codec 0x84ecf50, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:13.507 [mpeg2video @ 0xb7400b88]ac-tex damaged at 21 0
2008-08-16 15:01:13.507 [mpeg2video @ 0xb7400b88]ac-tex damaged at 21 1
2008-08-16 15:01:13.508 [mpeg2video @ 0xb7400b88]ac-tex damaged at 23 2
2008-08-16 15:01:13.508 [mpeg2video @ 0xb7400b88]ac-tex damaged at 21 3
2008-08-16 15:01:13.508 [mpeg2video @ 0xb7400b88]ac-tex damaged at 21 4
2008-08-16 15:01:13.508 [mpeg2video @ 0xb7400b88]invalid mb type in I 
Frame at 17 5
2008-08-16 15:01:13.508 [mpeg2video @ 0xb7400b88]ac-tex damaged at 42 6
2008-08-16 15:01:13.508 [mpeg2video @ 0xb7400b88]ac-tex damaged at 28 7
2008-08-16 15:01:13.508 [mpeg2video @ 0xb7400b88]Warning MVs not available
2008-08-16 15:01:15.009 AFD: Opened codec 0x837efd0, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:15.010 AFD: Opened codec 0x8309300, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:15.011 AFD: Opened codec 0x837eab0, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:15.011 AFD: codec MP2 has 2 channels
2008-08-16 15:01:15.011 AFD: Opened codec 0x837bf80, id(MP2) type(Audio)
2008-08-16 15:01:15.011 AFD: codec MP2 has 2 channels
2008-08-16 15:01:15.011 AFD: Opened codec 0x8384190, id(MP2) type(Audio)
2008-08-16 15:01:15.011 AFD: codec MP2 has 2 channels
2008-08-16 15:01:15.011 AFD: Opened codec 0x8325fc0, id(MP2) type(Audio)
2008-08-16 15:01:15.012 AFD: Opened codec 0x8305b10, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:15.014 AFD: Opened codec 0x82e5590, id(MPEG2VIDEO) 
type(Video)
2008-08-16 15:01:15.014 AFD: codec MP2 has 0 channels
2008-08-16 15:01:15.014 AFD: Opened codec 0x8380d40, id(MP2) type(Audio)
2008-08-16 15:01:15.014 AFD: codec MP2 has 2 channels
2008-08-16 15:01:15.014 AFD: Opened codec 0x84e2e30, id(MP2) type(Audio)
2008-08-16 15:01:15.014 AFD: codec MP2 has 2 channels
2008-08-16 15:01:15.014 AFD: Opened codec 0x82ce6b0, id(MP2) type(Audio)
2008-08-16 15:01:15.014 AFD: codec MP2 has 0 channels
2008-08-16 15:01:15.014 AFD: Opened codec 0x832a7d0, id(MP2) type(Audio)
2008-08-16 15:01:15.014 AFD: codec MP2 has 2 channels
2008-08-16 15:01:15.014 AFD: Opened codec 0x8354bc0, id(MP2) type(Audio)
2008-08-16 15:01:15.014 AFD: codec MP2 has 2 channels
2008-08-16 15:01:15.014 AFD: Opened codec 0x8355150, id(MP2) type(Audio)
2008-08-16 15:01:15.014 NVP: Disabling Audio, params(16,2,0)
2008-08-16 15:01:15.111 [mpeg2video @ 0xb7400b88]ac-tex damaged at 21 0
2008-08-16 15:01:15.111 [mpeg2video @ 0xb7400b88]ac-tex damaged at 21 1
2008-08-16 15:01:15.111 [mpeg2video @ 0xb7400b88]ac-tex damaged at 23 2
2008-08-16 15:01:15.111 [mpeg2video @ 0xb7400b88]ac-tex damaged at 21 3
2008-08-16 15:01:15.111 [mpeg2video @ 0xb7400b88]ac-tex damaged at 21 4
2008-08-16 15:01:15.111 [mpeg2video @ 0xb7400b88]invalid mb type in I 
Frame at 17 5
2008-08-16 15:01:15.111 [mpeg2video @ 0xb7400b88]ac-tex damaged at 42 6
2008-08-16 15:01:15.111 [mpeg2video @ 0xb7400b88]ac-tex damaged at 28 7
2008-08-16 15:01:15.111 [mpeg2video @ 0xb7400b88]Warning MVs not available
2008-08-16 15:01:15.154 [mpeg2video @ 0xb7400b88]invalid cbp at 47 0
2008-08-16 15:01:15.154 [mpeg2video @ 0xb7400b88]ac-tex damaged at 25 34
2008-08-16 15:01:15.154 [mpeg2video @ 0xb7400b88]ac-tex damaged at 27 35
2008-08-16 15:01:15.154 [mpeg2video @ 0xb7400b88]ac-tex damaged at 6 37
2008-08-16 15:01:15.154 [mpeg2video @ 0xb7400b88]ac-tex damaged at 1 37
2008-08-16 15:01:15.154 [mpeg2video @ 0xb7400b88]ac-tex damaged at 51 38
2008-08-16 15:01:15.154 [mpeg2video @ 0xb7400b88]ac-tex damaged at 0 39
2008-08-16 15:01:15.154 [mpeg2video @ 0xb7400b88]ac-tex damaged at 23 41
2008-08-16 15:01:15.155 [mpeg2video @ 0xb7400b88]mb incr damaged
2008-08-16 15:01:15.155 [mpeg2video @ 0xb7400b88]ac-tex damaged at 10 42
2008-08-16 15:01:15.155 [mpeg2video @ 0xb7400b88]slice mismatch
2008-08-16 15:01:15.155 [mpeg2video @ 0xb7400b88]ac-tex damaged at 43 44
2008-08-16 15:01:15.155 [mpeg2video @ 0xb7400b88]ac-tex damaged at 6 9
2008-08-16 15:01:15.155 [mpeg2video @ 0xb7400b88]ac-tex damaged at 75 8
2008-08-16 15:01:15.155 [mpeg2video @ 0xb7400b88]mb incr damaged
2008-08-16 15:01:15.155 [mpeg2video @ 0xb7400b88]ac-tex damaged at 39 10
2008-08-16 15:01:15.155 [mpeg2video @ 0xb7400b88]invalid mb type in P 
Frame at 27 11
2008-08-16 15:01:15.155 [mpeg2video @ 0xb7400b88]ac-tex damaged at 76 12
2008-08-16 15:01:15.155 [mpeg2video @ 0xb7400b88]ac-tex damaged at 52 13
2008-08-16 15:01:15.155 [mpeg2video @ 0xb7400b88]mb incr damaged
2008-08-16 15:01:15.155 [mpeg2video @ 0xb7400b88]invalid cbp at 6 15
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]ac-tex damaged at 9 16
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]ac-tex damaged at 15 17
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]ac-tex damaged at 36 18
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]ac-tex damaged at 35 19
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]invalid mb type in P 
Frame at 14 20
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]ac-tex damaged at 24 21
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]invalid mb type in P 
Frame at 36 23
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]ac-tex damaged at 39 25
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]ac-tex damaged at 2 25
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]ac-tex damaged at 36 26
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]invalid mb type in P 
Frame at 48 27
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]ac-tex damaged at 44 28
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]slice mismatch
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]ac-tex damaged at 19 30
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]invalid cbp at 9 31
2008-08-16 15:01:15.156 [mpeg2video @ 0xb7400b88]ac-tex damaged at 35 32
2008-08-16 15:01:15.157 [mpeg2video @ 0xb7400b88]invalid mb type in P 
Frame at 8 33
2008-08-16 15:01:15.157 [mpeg2video @ 0xb7400b88]ac-tex damaged at 46 34
2008-08-16 15:01:15.157 [mpeg2video @ 0xb7400b88]invalid mb type in P 
Frame at 22 35
2008-08-16 15:01:15.157 [mpeg2video @ 0xb7400b88]ac-tex damaged at 17 36
2008-08-16 15:01:15.157 [mpeg2video @ 0xb7400b88]ac-tex damaged at 28 38
2008-08-16 15:01:15.157 [mpeg2video @ 0xb7400b88]invalid mb type in P 
Frame at 49 38


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