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<p class=MsoNormal><span style='color:#1F497D'>Spent a perfectly good weekend
trying to fix this to no avail. Posting some new details in hopes that
someone will take pity on me and offer some help. No responses on fedora
or alsa lists.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Again problem is choppy audio on
playback of recorded shows. Happens on the Totem player too, not just
Myth. Watched a recorded show all the way through on myth. At some point
chop stops and audio gets progressively out of sync. Rewind restores chop
and sync for a while. Log shows </span><span style='color:#1F497D'>WriteAudio:
buffer underrun and repeated NVP(0): prebuffering pause.</span><span
style='color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Have tried all the following
then undone them because they didn’t work:<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Installed /etc/asound.conf per <a
href="http://www.mythtv.org/wiki/Configuring_Digital_Sound">http://www.mythtv.org/wiki/Configuring_Digital_Sound</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Fixes under audio issues at <a
href="http://www.mythtv.org/wiki/Troubleshooting:Prebuffering_pause">http://www.mythtv.org/wiki/Troubleshooting:Prebuffering_pause</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Tried Pulseaudio fixes and
workarounds at <a
href="http://fedorasolved.org/Members/fenris02/pulseaudio-fixes-and-workarounds">http://fedorasolved.org/Members/fenris02/pulseaudio-fixes-and-workarounds</a>
Regarding this, when I try to play noise per the troubleshooting section at the
bottom, i.e. cat /dev/urandom > /dev/dsp no noise is generated. However
aplay /usr/share/sounds/ekiga/ring.wav works<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Tried the asoundrc settings here
<a href="http://www.pulseaudio.org/wiki/PerfectSetup">http://www.pulseaudio.org/wiki/PerfectSetup</a>
and setting the output device to ALSA:pulse, result = no sound.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>No idea what else to try.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>I’ve posted recent
frontend log items below, and the output of the alsa audio debug data below
that.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>====================================================================<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:45.156 TV:
StartPlayer(0, Watching WatchingPreRecorded, main) -- begin<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:45.371 AFD:
Opened codec 0x469b990, id(H264) type(Video)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:45.371 AFD:
codec AAC has 2 channels<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:45.371 AFD:
Opened codec 0x4697110, id(AAC) type(Audio)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:45.373 Opening
audio device 'front'. ch 2(2) sr 48000<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:45.373 Opening
ALSA audio device 'front'.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:45.441 Mixer
unable to find control PCM<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:45.441 Mixer
unable to find control PCM<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:45.513
WriteAudio: buffer underrun<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:45.596 OSD
Theme Dimensions W: 1280 H: 720<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:46.205 TV:
StartPlayer(0, Watching WatchingPreRecorded, main) -- end ok<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:46.206 TV:
Changing from None to Watching WatchingPreRecorded<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:46.208 New DB
connection, total: 3<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:46.208 Using
realtime priority.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:46.210
Connected to database 'mythconverg' at host: mythtv<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:46.211 Video
timing method: USleep with busy wait<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:46.230
ScreenSaverX11Private: DPMS Deactivated 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:46.312 NVP(0):
prebuffering pause<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:46.352 NVP(0):
prebuffering pause<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:46.388 NVP(0):
prebuffering pause<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>2010-01-23 10:38:46.428 NVP(0):
prebuffering pause<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>==========================================================================<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>http://alsa.opensrc.org/index.php/Aadebug<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>ALSA Audio Debug v0.1.0 - Fri
Jan 22 15:09:31 MST 2010<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>http://alsa.opensrc.org/aadebug<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>http://www.gnu.org/licenses/gpl.txt<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Kernel
----------------------------------------------------<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Linux mythtv
2.6.31.12-174.2.3.fc12.x86_64 #1 SMP Mon Jan 18 19:52:07 UTC 2010 x86_64 x86_64
x86_64 GNU/Linux<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Loaded Modules
--------------------------------------------<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_hda_codec_realtek
281380 1 <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_hda_intel
30360 2 <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_hda_codec
72832 2 snd_hda_codec_realtek,snd_hda_intel<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_hwdep
9224 1 snd_hda_codec<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_seq
58080 0 <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_seq_device
7620 1 snd_seq<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_pcm
83144 2 snd_hda_intel,snd_hda_codec<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_timer
22608 2 snd_seq,snd_pcm<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd
67592 12 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_seq,snd_seq_device,snd_pcm,snd_timer<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_page_alloc
9568 2 snd_hda_intel,snd_pcm<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Modprobe Conf
---------------------------------------------<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Warning: module config file does
not exist<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>This means any kernel modules
will not be auto loaded<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>See your linux distro docs on
how to create this file<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Proc Asound
-----------------------------------------------<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Advanced Linux Sound
Architecture Driver Version 1.0.20.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 0
[Intel ]: HDA-Intel - HDA
Intel<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
HDA Intel at 0xea400000 irq 22<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
2: : timer<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>
3: : sequencer<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 4: [ 0- 2]: digital audio
capture<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 5: [ 0- 1]: digital audio
playback<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 6: [ 0- 1]: digital audio
capture<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 7: [ 0- 0]: digital audio
playback<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 8: [ 0- 0]: digital audio
capture<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 9: [ 0- 2]: hardware
dependent<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 10: [ 0] :
control<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>00-02: HDA Codec 2<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>00-00: ALC889A Analog : ALC889A
Analog : playback 1 : capture 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>00-01: ALC889A Digital : ALC889A
Digital : playback 1 : capture 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>00-02: ALC889A Analog : ALC889A
Analog : capture 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Client info<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> cur clients : 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> peak clients : 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> max clients : 192<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Client 0 :
"System" [Kernel]<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> Port 0 :
"Timer" (Rwe-)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> Port 1 :
"Announce" (R-e-)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Client 14 : "Midi
Through" [Kernel]<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> Port 0 :
"Midi Through Port-0" (RWe-)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Dev Snd
---------------------------------------------------<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>by-path
hwC0D2 pcmC0D0p pcmC0D1p seq<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>controlC0 pcmC0D0c
pcmC0D1c pcmC0D2c timer<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>CPU
-------------------------------------------------------<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>model name :
Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>cpu MHz :
2000.000<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>model name :
Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>cpu MHz :
2000.000<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>RAM
-------------------------------------------------------<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>MemTotal:
4057844 kB<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>SwapTotal:
8191992 kB<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Hardware
--------------------------------------------------<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>00:00.0 Host bridge: Intel
Corporation 4 Series Chipset DRAM Controller (rev 03)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>http://wiki.archlinux.org/index.php/Advanced_Linux_Sound_Architecture<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[root@mythtv mythtv]# ls -l
/dev/snd<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>total 0<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>drwxr-xr-x 2 root
root 60 2010-01-21 19:57 by-path<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>crw-rw----+ 1 root audio 116, 10
2010-01-21 19:57 controlC0<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>crw-rw----+ 1 root audio
116, 9 2010-01-21 19:57 hwC0D2<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>crw-rw----+ 1 root audio
116, 8 2010-01-22 15:04 pcmC0D0c<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>crw-rw----+ 1 root audio
116, 7 2010-01-22 14:48 pcmC0D0p<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>crw-rw----+ 1 root audio
116, 6 2010-01-21 19:58 pcmC0D1c<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>crw-rw----+ 1 root audio
116, 5 2010-01-21 19:58 pcmC0D1p<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>crw-rw----+ 1 root audio
116, 4 2010-01-21 19:57 pcmC0D2c<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>crw-rw----+ 1 root audio
116, 3 2010-01-21 19:57 seq<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>crw-rw----+ 1 root audio
116, 2 2010-01-21 19:57 timer<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[root@mythtv mythtv]# ls -l
/sys/module/snd/holders<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>total 0<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>lrwxrwxrwx 1 root root 0
2010-01-22 15:22 snd_hda_codec -> ../../snd_hda_codec<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>lrwxrwxrwx 1 root root 0
2010-01-22 15:22 snd_hda_codec_realtek -> ../../snd_hda_codec_realtek<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>lrwxrwxrwx 1 root root 0
2010-01-22 15:22 snd_hda_intel -> ../../snd_hda_intel<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>lrwxrwxrwx 1 root root 0
2010-01-22 15:22 snd_hwdep -> ../../snd_hwdep<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>lrwxrwxrwx 1 root root 0
2010-01-22 15:22 snd_pcm -> ../../snd_pcm<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>lrwxrwxrwx 1 root root 0
2010-01-22 15:22 snd_seq -> ../../snd_seq<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>lrwxrwxrwx 1 root root 0
2010-01-22 15:22 snd_seq_device -> ../../snd_seq_device<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>lrwxrwxrwx 1 root root 0
2010-01-22 15:22 snd_seq_dummy -> ../../snd_seq_dummy<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>lrwxrwxrwx 1 root root 0
2010-01-22 15:22 snd_timer -> ../../snd_timer<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>[root@mythtv mythtv]# lsmod|grep
'^snd' | column -t<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_seq_dummy
3428 0<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_hda_codec_realtek
281380 1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_hda_intel
30360 2<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_hda_codec
72832 2 snd_hda_codec_realtek,snd_hda_intel<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_hwdep
9224 1 snd_hda_codec<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_seq
58080 1 snd_seq_dummy<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_seq_device
7620 2 snd_seq_dummy,snd_seq<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_pcm
83144 2 snd_hda_intel,snd_hda_codec<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_timer
22608 2 snd_seq,snd_pcm<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd
67592 13
snd_seq_dummy,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_seq,snd_seq_device,snd_pcm,snd_timer<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>snd_page_alloc
9568 2 snd_hda_intel,snd_pcm<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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