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[Lee H <leehodg@xxxxxxxxx>]

I seem to be getting errors in syslog

 [alsa-source] alsa-source.c: ALSA woke us up to read new data from the device, but there was actually nothing to read!
 [alsa-source] alsa-source.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers.
 [alsa-source] alsa-source.c: We were woken up with POLLIN set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail.

alsa-info is here:http://www.alsa-
project.org/db/?f=8897fd05b02e0e8a8e5f05ef753b4bed59bc4d9a

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https://bugs.launchpad.net/bugs/320875

Title:
  pulseaudio produces lots of log messages

Status in ALSA driver:
  New
Status in “linux” package in Ubuntu:
  Fix Released
Status in “pulseaudio” package in Ubuntu:
  Fix Released

Bug description:
  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

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