[mythtv-users] WriteAudio Buffer Underrun

[Joel Means]

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Well, I have given up on Ubuntu and installed Fedora Core 5 on my
system.  I have a Via EPIA MII10000 with a Hauppauge PVR500.  I followed
Jarrod's guide and everything seems fine except that I keep getting
audio buffer underrun errors on live tv and previously recorded shows.
I have enabled realtime priority, set extra audio buffering on, and
tried with and without xvmc enabled (only makes about 5% difference in
cpu use and I get color in my osd without xvmc).  I have also changed
the ide latency as directed in the wiki.  Below is the pertinent section
from my frontend log.  Any advice is greatly appreciated.
Thanks,
Joel

2006-10-30 01:19:14.505 TV: Attempting to change from None to
WatchingPreRecorded
0: start_time: 0.036 duration: 172.234
1: start_time: 0.026 duration: 172.210
stream: start_time: 0.289 duration: 1913.823 bitrate=5191 kb/s
2006-10-30 01:19:14.600 AFD: Opened codec 0xa6ec980, id(MPEG2VIDEO)
type(Video)
2006-10-30 01:19:14.600 AFD: Opened codec 0x99ce730, id(MP2) type(Audio)
2006-10-30 01:19:14.637 DPMS Deactivated
0: start_time: 0.036 duration: 172.234
1: start_time: 0.026 duration: 172.210
stream: start_time: 0.289 duration: 1913.823 bitrate=5191 kb/s
2006-10-30 01:19:14.787 AFD: Opened codec 0x992fe20, id(MPEG2VIDEO)
type(Video)
2006-10-30 01:19:14.787 AFD: Opened codec 0x99cd640, id(MP2) type(Audio)
2006-10-30 01:19:14.800 Opening ALSA audio device 'spdif'.
2006-10-30 01:19:14.996 VideoOutputXv: XvMCTex: Init failed
2006-10-30 01:19:14.998 VideoOutputXv: XVideo Adaptor Name: 'XV_SWOV'
2006-10-30 01:19:18.886 TV: Changing from None to WatchingPreRecorded
2006-10-30 01:19:18.888 New DB connection, total: 3
2006-10-30 01:19:18.890 Connected to database 'mythconverg' at host:
localhost
2006-10-30 01:19:18.936 Video timing method: USleep with busy wait
2006-10-30 01:19:18.938 Using realtime priority.
2006-10-30 01:19:20.429 NVP: prebuffering pause
2006-10-30 01:19:25.302 WriteAudio: buffer underrun
2006-10-30 01:19:55.959 WriteAudio: buffer underrun
2006-10-30 01:20:03.091 WriteAudio: buffer underrun
2006-10-30 01:20:25.599 WriteAudio: buffer underrun
2006-10-30 01:20:28.586 WriteAudio: buffer underrun
2006-10-30 01:20:31.979 WriteAudio: buffer underrun
2006-10-30 01:20:33.601 WriteAudio: buffer underrun
2006-10-30 01:20:34.541 WriteAudio: buffer underrun
2006-10-30 01:20:35.864 WriteAudio: buffer underrun
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