[alsa-devel] 2.6.30-rc8 skipping regression also affects cmipci
Raymond Yau
superquad.vortex2 at gmail.com
Sun Mar 7 05:41:14 CET 2010
2010/3/2 Frédéric Brière <fbriere at fbriere.net>
> Frédéric Brière <fbriere at fbriere.net> wrote:
> > In so doing, I noticed infrequent occurrences of audio skipping, which I
> > managed to bisect down to c87d973. It would appear that this commit
> > also affects cmipci (CMI8738), albeit not as badly as it did for
>
> Apparently, this is also causing crashes for PulseAudio users:
> <https://bugzilla.redhat.com/show_bug.cgi?id=524385>. (My thanks to
> Masanari Iida for this pointer.)
>
> Again, if there's anything I can do to help, please let me know. And
> thanks for your hard work!
>
>
> -
Why PA sometime use snd_pcm_avail() and sometime use snd_pcm_delay() ?
pulseaudio[2114]: alsa-util.c: snd_pcm_avail() returned a value that is
exceptionally large: 18446744073709549460 bytes (418293516398 ms).
pulseaudio[2114]: alsa-util.c: Most likely this is a bug in the ALSA driver
'snd_cmipci'. Please report this issue to the ALSA developers.
pulseaudio[2114]: alsa-util.c: snd_pcm_dump():
pulseaudio[2114]: alsa-util.c: Hardware PCM card 0 'C-Media CMI8738' device 0
subdevice 0
pulseaudio[2114]: alsa-util.c: Its setup is:
pulseaudio[2114]: alsa-util.c: stream : PLAYBACK
pulseaudio[2114]: alsa-util.c: access : MMAP_INTERLEAVED
pulseaudio[2114]: alsa-util.c: format : S16_LE
pulseaudio[2114]: alsa-util.c: subformat : STD
pulseaudio[2114]: alsa-util.c: channels : 2
pulseaudio[2114]: alsa-util.c: rate : 44100
pulseaudio[2114]: alsa-util.c: exact rate : 44100 (44100/1)
pulseaudio[2114]: alsa-util.c: msbits : 16
pulseaudio[2114]: alsa-util.c: buffer_size : 16384
pulseaudio[2114]: alsa-util.c: period_size : 8192
pulseaudio[2114]: alsa-util.c: period_time : 185759
pulseaudio[2114]: alsa-util.c: tstamp_mode : ENABLE
pulseaudio[2114]: alsa-util.c: period_step : 1
pulseaudio[2114]: alsa-util.c: avail_min : 15886
pulseaudio[2114]: alsa-util.c: period_event : 0
pulseaudio[2114]: alsa-util.c: start_threshold : -1
pulseaudio[2114]: alsa-util.c: stop_threshold : 4611686018427387904
pulseaudio[2114]: alsa-util.c: silence_threshold: 0
pulseaudio[2114]: alsa-util.c: silence_size : 0
pulseaudio[2114]: alsa-util.c: boundary : 4611686018427387904
pulseaudio[2114]: alsa-util.c: appl_ptr : 4227619
pulseaudio[2114]: alsa-util.c: hw_ptr : 4210696
pulseaudio[2114]: alsa-util.c: snd_pcm_delay() returned a value that is
exceptionally large: 329472 bytes (1867 ms).
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