Bug#673847: pulseaudio: Master channel always muted and set to 0 after boot

[Sam Morris]

Package: pulseaudio
Version: 2.0-3
Severity: important

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Whenever I boot up, I have no sound. I spent ages fiddling around in
gnome-control-center and pavucontrol before I discovered that I can
adjust the ALSA mixers manually by runing 'alsamixer -c0'. From there it
is obvious why there is no sound: the Master channel is muted an set to
0%! There is seemingly no way to undo this save by going behind Pulse's
back and using alsamixer in this way.

I'm using a VirtualBox virtual machine, currently version 4.1.14. My
sound card:

00:05.0 Multimedia audio controller: Intel Corporation 82801AA AC'97 Audio Controller (rev 01)

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

Kernel: Linux 3.2.0-2-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 pulseaudio depends on:
ii  adduser                       3.113+nmu1
ii  consolekit                    0.4.5-3
ii  libasound2                    1.0.25-2
ii  libasound2-plugins            1.0.25-1+b1
ii  libc6                         2.13-32
ii  libcap2                       1:2.22-1
ii  libdbus-1-3                   1.5.12-1
ii  libfftw3-3                    3.3-1
ii  libgcc1                       1:4.7.0-7
ii  libice6                       2:1.0.8-2
ii  libltdl7                      2.4.2-1
ii  liborc-0.4-0                  1:0.4.16-2
ii  libpulse0                     2.0-3
ii  libsamplerate0                0.1.8-4
ii  libsm6                        2:1.2.1-2
ii  libsndfile1                   1.0.25-4
ii  libspeexdsp1                  1.2~rc1-3
ii  libstdc++6                    4.7.0-7
ii  libsystemd-daemon0            44-1
ii  libsystemd-login0             44-1
ii  libtdb1                       1.2.9+git20120207-2
ii  libudev0                      175-3.1
ii  libwebrtc-audio-processing-0  0.1-2
ii  libx11-6                      2:1.4.99.901-2
ii  libx11-xcb1                   2:1.4.99.901-2
ii  libxcb1                       1.8.1-1
ii  libxtst6                      2:1.2.1-1
ii  lsb-base                      4.1+Debian3
ii  udev                          175-3.1

Versions of packages pulseaudio recommends:
ii  gstreamer0.10-pulseaudio  0.10.31-2
ii  pulseaudio-module-x11     2.0-3
ii  rtkit                     0.10-2

Versions of packages pulseaudio suggests:
ii  paman             <none>
ii  paprefs           <none>
ii  pavucontrol       0.99.2-1
ii  pavumeter         0.9.3-1
ii  pulseaudio-utils  2.0-3

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