[mythtv-users] watching liveTV is a game of chance (myth 0.19)

Jörg Dreßler joschi79 at web.de
Mon Feb 27 01:42:13 UTC 2006


Hello out there,
since mythTV 0.19 I've several problems concering the cooperation of
mythTV and my Nebula DigiTV PCI. First I was getting IRQ-failures and
IRQ lock-ups, what had not happened with 0.18. After patching the bt878
module I've met another annoying problem. When trying to access the TV
card, it is sporadically inaccessible (~60% of all attempts), neither by
mythTV nor kaffeine or anything else. That results in a failure message
of mythfrontend "There should have been a by now. You can switch the
channel or select another input" (I hope you know this message - I only
get it in german) After that I might restart mythbackend or mostly it's
enough to retrieve the recording schedule or the EPG and then retry.
When recording, mythbackend is not even generating a file or it has 0 byte.
I somehow have the feeling that these two problems are connected in a
way and that the EPG/EIT-scanner has something to do with it. I'm quite
sure, that the EIT-scanner was triggering the IRQ lock-ups. A guess:
Perhaps the card is still generating the IRQ error but the patched
driver does not report it any more and is therefore not locked up. Or it
is simply a resource access problem?! But that's all mere guessing...

I'm using:
- SUSE 10
- kernel 2.6.13-15.8-smp
- this bt878-patch:
http://article.gmane.org/gmane.linux.drivers.dvb/20005/raw
 - something important I've forgotten?

thank you
    Jörg

mythbackend.log in case of failure:
2006-02-26 17:12:24.018 Running HouseKeeping
2006-02-26 17:15:08.362 DVB#0 Using DVB card 0, with frontend 'NxtWave
NXT6000 DVB-T'.
2006-02-26 17:15:08.377 DVB#0 WARNING - Unsupported bandwidth parameter.
2006-02-26 17:15:08.381 DVBSignalMonitor(0)::constructor(1,Warning, can
not count Uncorrected Blocks): Operation not supported
2006-02-26 17:15:08.393 EITScanner: Now looking for EIT data on channel 26
2006-02-26 17:16:34.853 MainServer::HandleAnnounce Monitor
2006-02-26 17:16:34.854 adding: fortress as a client (events: 0)
2006-02-26 17:16:34.889 MainServer::HandleAnnounce Monitor
2006-02-26 17:16:34.889 adding: fortress as a client (events: 1)
2006-02-26 17:16:34.897 MainServer::HandleAnnounce Playback
2006-02-26 17:16:34.897 adding: fortress as a client (events: 0)
2006-02-26 17:16:34.918 TVRec(1): Changing from None to WatchingLiveTV
2006-02-26 17:16:34.972 DVB#0 WARNING - Unsupported bandwidth parameter.
2006-02-26 17:16:35.342 DVBSignalMonitor(0)::constructor(1,Warning, can
not count Uncorrected Blocks): Operation not supported
2006-02-26 17:16:56.291 TVRec(1): Changing from WatchingLiveTV to None
2006-02-26 17:16:56.373 Finished recording auto motor und sport tv
"MagazinToyota RAV 4/VW Cross Polo/Chevrolet Kalos (Gas)/PT Cruiser":
channel 1011

mythfrontend.log:
2006-02-26 17:16:30.330 Using runtime prefix = /usr
2006-02-26 17:16:30.597 New DB connection, total: 1
2006-02-26 17:16:30.642 Connected to database 'mythconverg' at host:
localhost
2006-02-26 17:16:30.644 Total desktop dim: 1280x1024, with 2 screen[s].
2006-02-26 17:16:30.666 Using screen 0, 1280x1024 at 0,0
2006-02-26 17:16:30.682 Current Schema Version: 1123
2006-02-26 17:16:30.682 mythfrontend version: 0.19.20060121-2 www.mythtv.org
2006-02-26 17:16:30.682 Enabled verbose msgs:  important general
2006-02-26 17:16:31.363 lang0: ger
2006-02-26 17:16:31.363 lang: ger
2006-02-26 17:16:31.370 lang1: eng
2006-02-26 17:16:31.370 lang: eng
2006-02-26 17:16:31.432 Total desktop dim: 1280x1024, with 2 screen[s].
2006-02-26 17:16:31.435 Using screen 0, 1280x1024 at 0,0
2006-02-26 17:16:31.452 Switching to square mode (MythCenter)
2006-02-26 17:16:31.811 Joystick disabled.
2006-02-26 17:16:32.063 New DB connection, total: 2
2006-02-26 17:16:32.065 Connected to database 'mythconverg' at host:
localhost
2006-02-26 17:16:32.232 Registering Internal as a media playback plugin.
2006-02-26 17:16:32.316 Registering MythDVD DVD Media Handler as a media
handler
2006-02-26 17:16:32.317 Registering MythDVD VCD Media Handler as a media
handler
2006-02-26 17:16:34.837 Connecting to backend server: 127.0.0.1:6543
(try 1 of 5)
2006-02-26 17:16:34.846 Using protocol version 26
2006-02-26 17:16:34.873 TV: Attempting to change from None to WatchingLiveTV
2006-02-26 17:16:34.881 Using protocol version 26
0: start_time: 857.475 duration: -9223372036854.775
stream: start_time: 9527.500 duration: -9223372036854.775 bitrate=0 kb/s
2006-02-26 17:16:47.489 AFD: Opened codec 0x825d540, id(MPEG2VIDEO)
type(Video)
2006-02-26 17:16:47.490 NVP: Disabling Audio, params(-1,-1,-1)
2006-02-26 17:16:47.490 NVP: Disabling Audio, params(0,-1,-1)
2006-02-26 17:16:47.529 VideoOutputXv Error: Could not find suitable
XVideo surface.
2006-02-26 17:16:47.530 VideoOutputXv: Falling back to X shared memory
video output.
                  *** May be slow ***
2006-02-26 17:16:47.929 New DB connection, total: 3
2006-02-26 17:16:47.929 Realtime priority would require SUID as root.
2006-02-26 17:16:47.930 TV: Changing from None to WatchingLiveTV
2006-02-26 17:16:47.931 Connected to database 'mythconverg' at host:
localhost
2006-02-26 17:16:48.366 Video timing method: USleep with busy wait
2006-02-26 17:16:53.011 VideoOutputXv Error:
***
* Your system is not capable of displaying the
* full framerate at 1280x1024 resolution.  Frames
* will be skipped in order to keep the audio and
* video in sync.

2006-02-26 17:16:56.254 TV: Attempting to change from WatchingLiveTV to None
2006-02-26 17:16:56.451 TV: Changing from WatchingLiveTV to None





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