Okay this does sound likely. The sound service needs to handle pulseaudio either not running properly or disappearing while up. To confirm this:
1. Please ensure PA is running,
2. Remove the sound-indicator from the panel
3. From terminal run "killall indicator-sound-service".
4. Run "killall indicator-sound-service" again and ensure the return response is "indicator-sound-service: no process found"
5. Then re-add the sound menu to the panel.
Okay this does sound likely. The sound service needs to handle pulseaudio either not running properly or disappearing while up. To confirm this:
1. Please ensure PA is running, sound-service" . sound-service" again and ensure the return response is "indicator- sound-service: no process found"
2. Remove the sound-indicator from the panel
3. From terminal run "killall indicator-
4. Run "killall indicator-
5. Then re-add the sound menu to the panel.
It should come back up properly then.