[mythtv-users] MythTV error with saa7134 series card

[Eric Hokanson]

Hello,

I've built a MythTV v0.14 system with an old dusty bt878a capture card I 
had lying around and had it working great.  I decided to buy an ASUS TV 
FM card with the saa7133 chip and replace the older bt878.  I patched 
and rebuilt the kernel and modules and the card is detected fine on 
bootup.  It works great under xawtv 3.91, with a great looking picture 
and excellent sound.  However when I try to watch TV in MythTV all I get 
is a black screen and this printed on the console:
2004-04-04 08:06:14 mythfrontend version: 0.14.20040123-1 www.mythtv.org
2004-04-04 08:06:14 Enabled verbose msgs :all
2004-04-04 08:06:15 Registering Internal as a media playback plugin.
2004-04-04 08:06:15 Registering MythMusic Media Handler as a media handler
2004-04-04 08:06:18 Connecting to backend server: 127.0.0.1:6543 (try 1 
of 5)
2004-04-04 08:06:18 20      MYTH_PROTO_VERSION 1
2004-04-04 08:06:18 Using protocol version 1
2004-04-04 08:06:18 21      ANN Playback mythtv 0
2004-04-04 08:06:18 17      GET_FREE_RECORDER
2004-04-04 08:06:18 20      MYTH_PROTO_VERSION 1
2004-04-04 08:06:18 20      MYTH_PROTO_VERSION 1
2004-04-04 08:06:18 Using protocol version 1
2004-04-04 08:06:18 21      ANN Playback mythtv 1
2004-04-04 08:06:18 Using protocol version 1
2004-04-04 08:06:18 21      ANN Playback mythtv 0
2004-04-04 08:06:18 44      QUERY_RECORDER 7[]:[]SETUP_RING_BUFFER[]:[]0
2004-04-04 08:06:18 21      ANN Playback mythtv 0
2004-04-04 08:06:18 23      ANN RingBuffer mythtv 7
2004-04-04 08:06:18 33      QUERY_RECORDER 7[]:[]SPAWN_LIVETV
2004-04-04 08:06:18 33      QUERY_RECORDER 7[]:[]IS_RECORDING
2004-04-04 08:06:18 34      QUERY_RECORDER 7[]:[]GET_FRAMERATE
2004-04-04 08:06:18 53      QUERY_RECORDER 
7[]:[]REQUEST_BLOCK_RINGBUF[]:[]...
2004-04-04 08:06:26 Read(): reqd=128000, rcvd=128000, rept=128000, error=0
2004-04-04 08:06:26 66      QUERY_RECORDER 
7[]:[]SEEK_RINGBUF[]:[]0[]:[]0[]...
2004-04-04 08:06:26 53      QUERY_RECORDER 
7[]:[]REQUEST_BLOCK_RINGBUF[]:[]...
2004-04-04 08:06:26 Read(): reqd=128000, rcvd=128000, rept=128000, error=0
2004-04-04 08:06:26 Estimated bitrate = 0
2004-04-04 08:06:26 68      QUERY_RECORDER 
7[]:[]SEEK_RINGBUF[]:[]0[]:[]596...
2004-04-04 08:06:26 Opening OSS audio device '/dev/dsp'.
2004-04-04 08:06:26 53      QUERY_RECORDER 
7[]:[]REQUEST_BLOCK_RINGBUF[]:[]...
2004-04-04 08:06:26 Over/underscan. V: 0, H: 0, XOff: 0, YOff: 0
2004-04-04 08:06:26 Using XV port 56
2004-04-04 08:06:26 Read(): reqd=128000, rcvd=128000, rept=128000, error=0
2004-04-04 08:06:26 53      QUERY_RECORDER 
7[]:[]REQUEST_BLOCK_RINGBUF[]:[]...
2004-04-04 08:06:27 waiting for prebuffer...
2004-04-04 08:06:27 Changing from None to WatchingLiveTV
2004-04-04 08:06:27 35      QUERY_RECORDER 7[]:[]FRONTEND_READY
2004-04-04 08:06:27 prebuffer wait timed out..
2004-04-04 08:06:27 waiting for prebuffer...
2004-04-04 08:06:27 prebuffer wait timed out..
2004-04-04 08:06:27 waiting for prebuffer...
2004-04-04 08:06:27 prebuffer wait timed out..
2004-04-04 08:06:27 waiting for prebuffer...
Audio buffer overflow, audio data lost!
Audio buffer overflow, audio data lost!
Audio buffer overflow, audio data lost!
Audio buffer overflow, audio data lost!
2004-04-04 08:06:27 prebuffer wait timed out..
2004-04-04 08:06:27 waiting for prebuffer...
Audio buffer overflow, audio data lost!
Audio buffer overflow, audio data lost!
...(continues forever, or at least several minutes)

This is the strange part as I have not touched the audio system at all 
and I can get audio from xawtv.  I have tried both alsa and oss.  I can 
drop my bt878a card back in and it all works great.  Reinsert the 
saa7133 card and it errors out.  I've rerun myth setup, although 
everything is the same, /dev/video0, etc.  I'm out of ideas, please help!

Eric