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[Walter Ribeiro <1667520@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

When recording to a new track in Audacity, occasionally this problem occurs.
I hear a lot of noise and the record stops.

The output is:
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
Expression 'err' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 3355
Expression 'ContinuePoll( self, StreamDirection_In, &pollTimeout, &pollCapture )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 3881
Expression 'PaAlsaStream_WaitForFrames( stream, &framesAvail, &xrun )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 4253

I'm using Ubuntu Studio 16.04 fresh install, regularly updated.
Audacity 2.1.2

** Affects: audacity (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1667520

Title:
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred

Status in audacity package in Ubuntu:
  New

Bug description:
  When recording to a new track in Audacity, occasionally this problem occurs.
  I hear a lot of noise and the record stops.

  The output is:
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  ALSA lib pcm.c:7963:(snd_pcm_recover) underrun occurred
  Expression 'err' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 3355
  Expression 'ContinuePoll( self, StreamDirection_In, &pollTimeout, &pollCapture )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 3881
  Expression 'PaAlsaStream_WaitForFrames( stream, &framesAvail, &xrun )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 4253

  I'm using Ubuntu Studio 16.04 fresh install, regularly updated.
  Audacity 2.1.2

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