Thank you for reporting this bug to Ubuntu. Ubuntu 12.04 (precise) reached end-of-life on April 28, 2017.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. ** Changed in: pulseaudio (Ubuntu) Status: Triaged => Incomplete ** Changed in: pulseaudio (Ubuntu) Milestone: ubuntu-12.04 => None -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/932096 Title: [armel] Pulseaudio crashes other program using sound: Assertion 'pthread_mutex_unlock(&m->mutex) == 0' Status in pulseaudio package in Ubuntu: Incomplete Bug description: Whenever a program tries to use sound in anyway (and in some wierd other cases like using tab-completion in a terminal) the program just crashes with Assertion 'pthread_mutex_unlock(&m->mutex) == 0' failed at pulsecore/mutex-posix.c:106, function pa_mutex_unlock(). Aborting. Aborted Because it lets metacity crash whenever I use tab in a terminal, it renders my system useless. I found solutions for meego her: https://bugs.meego.com/show_bug.cgi?id=13567 Easiest workaround was to disable PTHREAD priority inheritance feature that was the root cause at least on Your case. For example to configure.ac, Add pulseaudio_cv_PTHREAD_PRIO_INHERIT=no Before AS_IF([test "$pulseaudio_cv_PTHREAD_PRIO_INHERIT" = "yes"], [ AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], 1, [Have PTHREAD_PRIO_INHERIT.]) ]) I will to apply this fix and as soon as I get it working/compiled I'll report back. It might very well be a problem for armel with more than one core (as suggested on the other site). Expect: Sound output (or at least a normal running program) What happens instead: Program crashes with Assertion 'pthread_mutex_unlock(&m->mutex) == 0' failed at pulsecore/mutex-posix.c:106, function pa_mutex_unlock(). Aborting. Aborted Steps to reproduce: Open Settings/Sound/Output/Test and test one speaker ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: pulseaudio 1:1.1-0ubuntu7 Uname: Linux 2.6.36.4 armv7l AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. ApportVersion: 1.91-0ubuntu1 Architecture: armel Date: Tue Feb 14 15:36:33 2012 SourcePackage: pulseaudio UpgradeStatus: Upgraded to precise on 2012-02-09 (4 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/932096/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp

