I run various flavors of linux, with release &/or 'stable' kernels.

In all cases, it's KDE w/ pulseaudio. E.g., on my desktop machine,

        rpm -qa | grep -i pulse | sort
                alsa-plugins-pulse-1.1.6-122.1.x86_64
                libpulse0-11.1-14.1.x86_64
                libpulse0-32bit-9.0-8.1.x86_64
                libpulse-devel-11.1-14.1.x86_64
                libpulse-mainloop-glib0-11.1-14.1.x86_64
                libxine2-pulse-1.2.9-133.3.x86_64
                mpg123-pulse-1.25.10-28.2.x86_64
                pulseaudio-11.1-14.1.x86_64
                pulseaudio-bash-completion-11.1-14.1.x86_64
                pulseaudio-lang-11.1-14.1.noarch
                pulseaudio-module-gconf-11.1-14.1.x86_64
                pulseaudio-module-jack-11.1-14.1.x86_64
                pulseaudio-module-lirc-11.1-14.1.x86_64
                pulseaudio-module-x11-11.1-14.1.x86_64
                pulseaudio-system-wide-11.1-14.1.x86_64
                pulseaudio-utils-11.1-14.1.x86_64


I've got Logitech webcams attached -- with both video & audio.  E.g.,

        hwinfo
                ...
                76: USB 00.3: 0000 Unclassified device
                  [Created at usb.122]
                  Unique ID: 82fT.dxozCEIXKDA
                  Parent ID: qe89.xvTGa+XkbXF
                  SysFS ID: 
/devices/pci0000:00/0000:00:05.0/0000:04:00.0/usb2/2-2/2-2.4/2-2.4.3/2-2.4.3:1.3
                  SysFS BusID: 2-2.4.3:1.3
                  Hardware Class: unknown
                  Model: "Logitech HD Pro Webcam C920"
                  Hotplug: USB
                  Vendor: usb 0x046d "Logitech, Inc."
                  Device: usb 0x082d "HD Pro Webcam C920"
                  Revision: "0.11"
                  Driver: "snd-usb-audio"
                  Driver Modules: "snd_usb_audio"
                  Speed: 480 Mbps
                  Module Alias: 
"usb:v046Dp082Dd0011dcEFdsc02dp01ic01isc02ip00in03"
                  Config Status: cfg=new, avail=yes, need=no, active=unknown
                  Attached to: #80 (Hub)

The cam & mic work fine.  I can record audio via the mic in, e.g. Audacity, 
with no problems.

BUT ...

when in Google Hangouts videocon, video works perfectly, but the audio simply 
does not function.

Otoh, If I attach a _separate_ mic via USB, it works fine -- Hangouts uses 
video from the Logitech + audio from the separate mic.

'Something(TM)' about this integrated cam+mic, &/or my config, is clearly a 
problem for Hangouts.

I don't know yet where to start looking to troubleshoot this.

Any guidance as to where the problem might originate? Or even where to begin to 
look?

Hal

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