Bug#768101: mate-media-gstreamer: asymmetric operation of mute/unmute

[Arnaud Installe]

Package: mate-media-gstreamer
Version: 1.8.0+dfsg1-3
Severity: important

Unmuting sound after muting it results in no sound.
This happens whether clicking the "mute" button twice on the keyboard, or
whether right-clicking mixer-applet2, and clicking "mute" twice.
It does not happen when using the "mute" button within pavucontrol.

What happens can be seen by opening "mate-volume-control":
_ Device is set to "HDA Intel MID (Alsa mixer)".
_ In the "playback" tab, vertical sliders are shown, with "enable/disable"
buttons underneath, for master, headphone, speaker, PCM, Mic Boost, and
internal mic boost.
_ When clicking "mute" the first time, to mute sound, master and speaker are
disabled.
_ When clicking "mute" the second time, to unmute sound, only master is re-
enabled, leaving speaker disabled.

Because of this asymmetric operation of mute/unmute, sound cannot be re-enabled
using the mute button. The speaker has to be re-enabled using the
enable/disable buttons in mate-volume-control.
By comparison, pavucontrol behaves correctly: clicking "mute" in its UI twice
results in master and speaker being disabled and re-enabled, respectively.



-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages mate-media-gstreamer depends on:
ii  dconf-gsettings-backend [gsettings-backend]           0.22.0-1
ii  gstreamer0.10-alsa [gstreamer0.10-audiosink]          0.10.36-2
ii  gstreamer0.10-plugins-bad [gstreamer0.10-audiosink]   0.10.23-7.4
ii  gstreamer0.10-plugins-base                            0.10.36-2
ii  gstreamer0.10-plugins-good [gstreamer0.10-audiosink]  0.10.31-3+nmu4+b1
ii  gstreamer0.10-pulseaudio [gstreamer0.10-audiosink]    0.10.31-3+nmu4+b1
ii  libatk1.0-0                                           2.14.0-1
ii  libc6                                                 2.19-12
ii  libcairo2                                             1.14.0-2.1
ii  libcanberra-gtk0                                      0.30-2.1
ii  libcanberra0                                          0.30-2.1
ii  libfontconfig1                                        2.11.0-6.1
ii  libfreetype6                                          2.5.2-2
ii  libgdk-pixbuf2.0-0                                    2.31.1-2+b1
ii  libglib2.0-0                                          2.42.0-2
ii  libgstreamer-plugins-base0.10-0                       0.10.36-2
ii  libgstreamer0.10-0                                    0.10.36-1.4
ii  libgtk2.0-0                                           2.24.25-1
ii  libmate-desktop-2-17                                  1.8.1+dfsg1-2
ii  libmate-panel-applet-4-1                              1.8.1+dfsg1-2
ii  libpango-1.0-0                                        1.36.8-2
ii  libpangocairo-1.0-0                                   1.36.8-2
ii  libpangoft2-1.0-0                                     1.36.8-2
ii  libstartup-notification0                              0.12-4
ii  libx11-6                                              2:1.6.2-3
ii  libxml2                                               2.9.2+dfsg1-1
ii  marco-common                                          1.8.2+dfsg1-4
ii  mate-desktop                                          1.8.1+dfsg1-2
ii  mate-media-common                                     1.8.0+dfsg1-3
ii  x11-utils                                             7.7+2

Versions of packages mate-media-gstreamer recommends:
ii  alsa-utils               1.0.28-1
ii  sound-theme-freedesktop  0.8-1

mate-media-gstreamer suggests no packages.

-- no debconf information