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[Enrico <enricobe@xxxxxxxxxxx>]

Public bug reported:

When I edit some MP3 on Xubuntu, sometimes this bug occurs. I now have
15.10 (testing), but also with 15.04 this bug happens.

When I press PLAY, i hear a lot of noise. If I play stop, Audacity
freezes and sometimes crashes. If i don't press Stop, i hear the noise
for some seconds and then i hear the MP3 correctly, but if i stop it and
PLAY it again, i hear the noise.

The terminal returns

---ALSA lib pcm.c:7843:(snd_pcm_recover) underrun occurred

THOUSANDS of times, and then (if audacity crashes and doesn't only freeze):
                        
--- audacity: ../nptl/pthread_mutex_lock.c:364: __pthread_mutex_lock_full: Assertion `robust || (oldval & 0x40000000) == 0' failed.
Annullato (core dump creato)

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: audacity 2.0.6-2
ProcVersionSignature: Ubuntu 3.19.0-17.17-generic 3.19.6
Uname: Linux 3.19.0-17-generic x86_64
AlsaCards:
 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                       HDA Intel PCH at 0xc3110000 irq 29
  1 [HDMI           ]: HDA-Intel - HDA ATI HDMI
                       HDA ATI HDMI at 0xc2020000 irq 31
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: XFCE
Date: Fri May 15 21:49:33 2015
InstallationDate: Installed on 2015-05-03 (12 days ago)
InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
SourcePackage: audacity
UpgradeStatus: Upgraded to wily on 2015-05-12 (3 days ago)

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


** Tags: amd64 apport-bug wily

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https://bugs.launchpad.net/bugs/1455637

Title:
  ALSA lib pcm.c:7843:(snd_pcm_recover) underrun occurred

Status in audacity package in Ubuntu:
  New

Bug description:
  When I edit some MP3 on Xubuntu, sometimes this bug occurs. I now have
  15.10 (testing), but also with 15.04 this bug happens.

  When I press PLAY, i hear a lot of noise. If I play stop, Audacity
  freezes and sometimes crashes. If i don't press Stop, i hear the noise
  for some seconds and then i hear the MP3 correctly, but if i stop it
  and PLAY it again, i hear the noise.

  The terminal returns

  ---ALSA lib pcm.c:7843:(snd_pcm_recover) underrun occurred

  THOUSANDS of times, and then (if audacity crashes and doesn't only freeze):
                          
  --- audacity: ../nptl/pthread_mutex_lock.c:364: __pthread_mutex_lock_full: Assertion `robust || (oldval & 0x40000000) == 0' failed.
  Annullato (core dump creato)

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: audacity 2.0.6-2
  ProcVersionSignature: Ubuntu 3.19.0-17.17-generic 3.19.6
  Uname: Linux 3.19.0-17-generic x86_64
  AlsaCards:
   0 [PCH            ]: HDA-Intel - HDA Intel PCH
                         HDA Intel PCH at 0xc3110000 irq 29
    1 [HDMI           ]: HDA-Intel - HDA ATI HDMI
                         HDA ATI HDMI at 0xc2020000 irq 31
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Fri May 15 21:49:33 2015
  InstallationDate: Installed on 2015-05-03 (12 days ago)
  InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
  SourcePackage: audacity
  UpgradeStatus: Upgraded to wily on 2015-05-12 (3 days ago)

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