Bug#717897: pulseaudio: Microphone does not work in Skype

[Pavel Fedin]

Package: pulseaudio
Version: 2.0-6.1
Severity: important

 Hello!

 I have installed Wheezy on my AspireOne and got infamous "microphone does not
work" problem.
 I have already looked up some other's experience on the Internet. But none
helped:
 1. GNOME sound recorder - works fine.
 2. PulseAudio volume meter - works fine, i see microphone input.
 3. PulseAudio volume control - works as described on the Internet. Its own
volume meter shows microphone input only if i set different volume on channels,
and only when some app is actualy consuming the input (e. g. volume meter is
running).
 4. Skype-specific settings in volume control (which appear on 'Recording' tab
while Skype is actually using the microphone) are OK, input set to 'Built-in
analog stereo', not to 'Monitor'. By the way, for testing i tried setting it to
'Monitor' and feed in some MP3. Skype test call reproduces the sound correctly
in this case.
 I have a suggestion that the problem occurs because Skype requests mono stream
(there is only one volume regulator for Skype's stream in puavcontrol). For
example, when Volume Monitor is run, it requests stereo stream, and i see two
regulators for L and R channels on 'Recording' tab. Perhaps it has the same
origin as non-working volume gauge when both mic channels are set to the same
level.



-- System Information:
Debian Release: 7.1
Architecture: i386 (i686)

Kernel: Linux 3.2.0-4-686-pae (SMP w/2 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 pulseaudio depends on:
ii  adduser                       3.113+nmu3
ii  consolekit                    0.4.5-3.1
ii  libasound2                    1.0.25-4
ii  libasound2-plugins            1.0.25-2
ii  libc6                         2.13-38
ii  libcap2                       1:2.22-1.2
ii  libdbus-1-3                   1.6.8-1
ii  libfftw3-3                    3.3.2-3.1
ii  libgcc1                       1:4.7.2-5
ii  libice6                       2:1.0.8-2
ii  libltdl7                      2.4.2-1.1
ii  liborc-0.4-0                  1:0.4.16-2
ii  libpulse0                     2.0-6.1
ii  libsamplerate0                0.1.8-5
ii  libsm6                        2:1.2.1-2
ii  libsndfile1                   1.0.25-5
ii  libspeexdsp1                  1.2~rc1-7
ii  libstdc++6                    4.7.2-5
ii  libsystemd-daemon0            44-11
ii  libsystemd-login0             44-11
ii  libtdb1                       1.2.10-2
ii  libudev0                      175-7.2
ii  libwebrtc-audio-processing-0  0.1-2
ii  libx11-6                      2:1.5.0-1+deb7u1
ii  libx11-xcb1                   2:1.5.0-1+deb7u1
ii  libxcb1                       1.8.1-2+deb7u1
ii  libxtst6                      2:1.2.1-1+deb7u1
ii  lsb-base                      4.1+Debian8+deb7u1
ii  udev                          175-7.2

Versions of packages pulseaudio recommends:
ii  gstreamer0.10-pulseaudio  0.10.31-3+nmu1
ii  pulseaudio-module-x11     2.0-6.1
ii  rtkit                     0.10-2

Versions of packages pulseaudio suggests:
pn  paman             <none>
pn  paprefs           <none>
ii  pavucontrol       1.0-1
ii  pavumeter         0.9.3-4
ii  pulseaudio-utils  2.0-6.1

-- no debconf information