Bug#645063: pulseaudio mutes itself when a sink is muted, but does not unmute

[David Banks]

Package: pulseaudio
Version: 1.0-4
Severity: normal

Since a couple of weeks ago, pulse now behaves so that if I mute the ALSA card
that is the main sink for it, pulse's own master control (visible in alsamixer
and the GNOME volume control applet) automatically mutes itself.  That is fine,
but if I then unmute that ALSA card, pulseaudio does not unmute itself.

At the moment using the mute button on my keyboard seems to affect the ALSA
card, so this behaviour breaks keyboard mute toggling.  More strangely, if I
right-click the GNOME volume control applet, the option 'Mute' also shows this
broken behaviour - if I mute it once, I can never unmute it using that option,
since Pulseaudio stays muted.  However, if I right click and select 'Open Volume
Control', the mute button in the resulting dialog works correctly to mute and
unmute Pulseaudio.

Cheers,
David

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.0.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages pulseaudio depends on:
ii  adduser             3.113      
ii  consolekit          0.4.5-1    
ii  libasound2          1.0.24.1-4 
ii  libasound2-plugins  1.0.24-2+b1
ii  libc6               2.13-21    
ii  libcap2             1:2.22-1   
ii  libdbus-1-3         1.4.16-1   
ii  libfftw3-3          3.2.2-1    
ii  libice6             2:1.0.7-2  
ii  libltdl7            2.4-4      
ii  liborc-0.4-0        1:0.4.15-2 
ii  libpulse0           1.0-4      
ii  libsamplerate0      0.1.8-1    
ii  libsm6              2:1.2.0-2  
ii  libsndfile1         1.0.25-3   
ii  libspeexdsp1        1.2~rc1-1  
ii  libtdb1             1.2.9-4+b1 
ii  libudev0            172-1      
ii  libx11-6            2:1.4.4-2  
ii  libx11-xcb1         2:1.4.4-2  
ii  libxcb1             1.7-3      
ii  libxtst6            2:1.2.0-3  
ii  lsb-base            3.2-28     
ii  udev                172-1      

Versions of packages pulseaudio recommends:
ii  gstreamer0.10-pulseaudio  0.10.30-1
ii  pulseaudio-esound-compat  1.0-4    
ii  pulseaudio-module-x11     1.0-4    
ii  rtkit                     0.10-2   

Versions of packages pulseaudio suggests:
ii  paman             <none>
ii  paprefs           <none>
ii  pavucontrol       <none>
ii  pavumeter         <none>
ii  pulseaudio-utils  1.0-4 

-- no debconf information