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

[Enrico]

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)

[dino99 (9d9)]

As a non-LTS release, 15.10 has a 9-month month support cycle and, as such, the support period is now nearing its end and Ubuntu 15.10 will reach end of life on Thursday, July 28th. At that time, Ubuntu Security Notices will no longer include information or updated packages for Ubuntu 15.10.