I hit this bug by connecting a USB headset and trying to select its microphone as my sound input device in the sound settings dialog. I tried Conor's suggestion in comment #6 and indeed that edit to the config file fixes things for me -- I am able to select the USB headset microphone and sound input does work through that device.
I hit this bug by connecting a USB headset and trying to select its microphone as my sound input device in the sound settings dialog. I tried Conor's suggestion in comment #6 and indeed that edit to the config file fixes things for me -- I am able to select the USB headset microphone and sound input does work through that device.