Bug#781479: lmms: Sound is randomly corrupted when opening project

[Jakob Wiedner]

Package: lmms
Version: 1.0.3-5
Severity: important

Dear Maintainer,

when opening a project (using alsa) the playback produces only noise. This
happens seemingly randomly. Restart of lmms immediately does not solve the
problem and (as well) randomly the playback is normal again after waiting a
couple of minutes.

For trying to reproduce this behaviour opening lmms in a terminal brought the
folowing:

Notice: could not set realtime priority.

Interestingly, when lmms only produces noise, at the gnome system setting gui
under 'sound > applications' lmms occurs flickering and is non-responsive.



-- System Information:
Debian Release: 8.0
  APT prefers testing-updates
  APT policy: (500, 'testing-updates'), (500, 'testing-proposed-updates'), (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 3.16.0-4-686-pae (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
Init: systemd (via /run/systemd/system)

Versions of packages lmms depends on:
ii  libasound2                        1.0.28-1
ii  libc6                             2.19-15
ii  libfftw3-single3                  3.3.4-2
ii  libfluidsynth1                    1.1.6-2
ii  libfontconfig1                    2.11.0-6.3
ii  libgcc1                           1:4.9.2-10
ii  libjack-jackd2-0 [libjack-0.116]  1.9.10+20140719git3eb0ae6a~dfsg-2
ii  libogg0                           1.3.2-1
ii  libportaudio2                     19+svn20140130-1
ii  libpulse0                         5.0-13
ii  libqt4-xml                        4:4.8.6+git64-g5dc8b2b+dfsg-3
ii  libqtcore4                        4:4.8.6+git64-g5dc8b2b+dfsg-3
ii  libqtgui4                         4:4.8.6+git64-g5dc8b2b+dfsg-3
ii  libsamplerate0                    0.1.8-8
ii  libsdl1.2debian                   1.2.15-10+b1
ii  libsndfile1                       1.0.25-9.1
ii  libstdc++6                        4.9.2-10
ii  libstk0c2a                        4.4.4-5+b1
ii  libvorbis0a                       1.3.4-2
ii  libvorbisenc2                     1.3.4-2
ii  libvorbisfile3                    1.3.4-2
ii  libx11-6                          2:1.6.2-3
ii  libxext6                          2:1.3.3-1
ii  libxft2                           2.3.2-1
ii  libxinerama1                      2:1.1.3-1+b1
ii  lmms-common                       1.0.3-5
ii  stk                               4.4.4-5+b1
ii  zlib1g                            1:1.2.8.dfsg-2+b1

Versions of packages lmms recommends:
ii  caps         0.9.23-1
ii  tap-plugins  0.7.3-1

Versions of packages lmms suggests:
ii  fil-plugins         0.3.0-3
ii  fluid-soundfont-gm  3.1-5
ii  freepats            20060219-1
ii  mcp-plugins         0.4.0-2
ii  omins               0.2.0-7.1

-- no debconf information