Bug#711007: audacity: Plays garbled sound and then hangs

[Sam Morris]

Package: audacity
Version: 2.0.3-1
Severity: important

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After opening a sound, the playback is very garbled. The following
message is printed repeatedly to the console:

ALSA lib pcm.c:7339:(snd_pcm_recover) underrun occurred

When I press Stop, the program hangs. Here's the backtrace:

	#0  0x00007f07882b3b70 in __pause_nocancel () at ../sysdeps/unix/syscall-template.S:81
	#1  0x00007f07882aaa7e in __pthread_mutex_lock_full (mutex=0x25775c0) at pthread_mutex_lock.c:321
	#2  0x00007f07777b754e in pa_mutex_lock (m=<optimized out>) at pulsecore/mutex-posix.c:90
	#3  0x00007f0776950c9d in ?? () from /usr/lib/x86_64-linux-gnu/alsa-lib/libasound_module_pcm_pulse.so
	#4  0x00007f0788556358 in snd_pcm_ioplug_drop (pcm=0x2468c00) at pcm_ioplug.c:464
	#5  0x00007f07885158fd in snd_pcm_close (pcm=0x2468c00) at pcm.c:695
	#6  0x00007f07887c1efe in ?? () from /usr/lib/x86_64-linux-gnu/libportaudio.so.2
	#7  0x00007f07887c1f9d in ?? () from /usr/lib/x86_64-linux-gnu/libportaudio.so.2
	#8  0x000000000052d7c5 in AudioIO::StopStream (this=0x1c75b30) at AudioIO.cpp:1648
	#9  0x00000000006c1ba4 in ControlToolBar::StopPlaying (this=0x1ee06c0, stopStream=true) at toolbars/ControlToolBar.cpp:727
	#10 0x00007f078c3d23f6 in wxEvtHandler::ProcessEventIfMatches(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&) () from /usr/lib/x86_64-linux-gnu/libwx_baseu-2.8.so.0
	#11 0x00007f078c3d2564 in wxEventHashTable::HandleEvent(wxEvent&, wxEvtHandler*) () from /usr/lib/x86_64-linux-gnu/libwx_baseu-2.8.so.0
	#12 0x00007f078c3d2887 in wxEvtHandler::ProcessEvent(wxEvent&) () from /usr/lib/x86_64-linux-gnu/libwx_baseu-2.8.so.0
	#13 0x00007f078cb553d9 in wxWindowBase::TryParent(wxEvent&) () from /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-2.8.so.0
	#14 0x00000000006d6b7e in AButton::Click (this=this at entry=0x1ef3090) at widgets/AButton.cpp:408
	#15 0x00000000006d6f0e in AButton::OnMouseEvent (this=0x1ef3090, event=...) at widgets/AButton.cpp:286
	#16 0x00007f078c3d23f6 in wxEvtHandler::ProcessEventIfMatches(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&) () from /usr/lib/x86_64-linux-gnu/libwx_baseu-2.8.so.0
	#17 0x00007f078c3d2564 in wxEventHashTable::HandleEvent(wxEvent&, wxEvtHandler*) () from /usr/lib/x86_64-linux-gnu/libwx_baseu-2.8.so.0
	#18 0x00007f078c3d2887 in wxEvtHandler::ProcessEvent(wxEvent&) () from /usr/lib/x86_64-linux-gnu/libwx_baseu-2.8.so.0
	#19 0x00007f078ca8caa8 in ?? () from /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-2.8.so.0
	#20 0x00007f0787b19f19 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
	#21 0x00007f07874f4620 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
	#22 0x00007f0787505e30 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
	#23 0x00007f078750d972 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
	#24 0x00007f078750df82 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
	#25 0x00007f0787c31e9e in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
	#26 0x00007f0787b18284 in gtk_propagate_event () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
	#27 0x00007f0787b185eb in gtk_main_do_event () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
	#28 0x00007f078778e80c in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
	#29 0x00007f0787230f25 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
	#30 0x00007f0787231268 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
	#31 0x00007f07872316da in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
	#32 0x00007f0787b175e7 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
	#33 0x00007f078ca7b268 in wxEventLoop::Run() () from /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-2.8.so.0
	#34 0x00007f078caed33c in wxAppBase::MainLoop() () from /usr/lib/x86_64-linux-gnu/libwx_gtk2u_core-2.8.so.0
	#35 0x00007f078c3844e5 in wxEntry(int&, wchar_t**) () from /usr/lib/x86_64-linux-gnu/libwx_baseu-2.8.so.0
	#36 0x000000000050aed2 in main (argc=2, argv=<optimized out>) at AudacityApp.cpp:644

Playback is via the 'default' alsa PCM. I've not got an .asoundrc nor
made any changes to the default pulse/alsa configuration on the system.

- -- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (540, 'testing'), (530, 'unstable'), (520, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.2.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages audacity depends on:
ii  audacity-data     2.0.3-1
ii  libasound2        1.0.25-4
ii  libavcodec53      6:0.8.7-1
ii  libavformat53     6:0.8.7-1
ii  libavutil51       6:0.8.7-1
ii  libc6             2.17-3
ii  libexpat1         2.1.0-3
ii  libflac++6        1.2.1-6
ii  libflac8          1.2.1-6
ii  libgcc1           1:4.8.0-7
ii  libglib2.0-0      2.36.1-2build1
ii  libgtk2.0-0       2.24.18-1
ii  libid3tag0        0.15.1b-10
ii  libmad0           0.15.1b-8
ii  libmp3lame0       3.99.5+repack1-3
ii  libogg0           1.3.1-1
ii  libportaudio2     19+svn20111121-1
ii  libportsmf0       0.1~svn20101010-4
ii  libsbsms10        2.0.1-1
ii  libsndfile1       1.0.25-5
ii  libsoundtouch0    1.7.1-2
ii  libsoxr0          0.1.1-1
ii  libstdc++6        4.8.0-7
ii  libtwolame0       0.3.13-1
ii  libvamp-hostsdk3  2.4-1
ii  libvorbis0a       1.3.2-1.3
ii  libvorbisenc2     1.3.2-1.3
ii  libvorbisfile3    1.3.2-1.3
ii  libwxbase2.8-0    2.8.12.1-12
ii  libwxgtk2.8-0     2.8.12.1-12

audacity recommends no packages.

Versions of packages audacity suggests:
pn  ladspa-plugin  <none>

- -- no debconf information

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