** Description changed:
Binary package hint: pulseaudio
pulseaudio 0.9.14-0ubuntu1 produces these log messages:
alsa-util.c: Cannot find fallback mixer control "PCM" or mixer control is no
combination of switch/volume.
alsa-util.c: snd_pcm_avail_update() returned a value that is exceptionally
large: 412788 bytes (780 ms) Most likely this is an ALSA driver bug. Please
report this issue to the PulseAudio developers.
and thousands of this:
module-alsa-sink.c: ALSA woke us up to write new data to the device, but
there was actually nothing to write! Most likely this is an ALSA driver
bug. Please report this issue to the PulseAudio developers.
+ With pulseaudio 0.9.14-0ubuntu2 the error message changed to:
+
+ module-alsa-sink.c: ALSA woke us up to write new data to the device, but
+ there was actually nothing to write! Most likely this is an ALSA driver
+ bug. Please report this issue to the ALSA developers. We were woken up
+ with POLLOUT set -- however a subsequent snd_pcm_avail_update() returned
+ 0.
+
With pulseaudio 0.9.14-0ubuntu1 I have only these log messages, but no
sound glitches any more.
$ cat /proc/asound/cards
0 [Audigy2 ]: Audigy2 - Audigy 4 [SB0610]
Audigy 4 [SB0610] (rev.0, serial:0x10211102) at 0x1000,
irq 21
--
pulseaudio produces lots of log messages
https://bugs.launchpad.net/bugs/320875
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