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I'm remoted into a Linux VM running CentOS 7 via NoMachine. NoMachine presents the client's microphone as a pulseaudio source. I can use Audacity to record from the pulseaudio source. However, other applications - Chrome, Firefox, Slack, WebEx - don't see or don't recognize the pulseaudio source as a microphone. test.webrtc.org says [ FAILED ] Failed to get access to local media due to error: NotFoundError.

pacmd list-sources shows:

2 source(s) available. index: 1 name: <nx_voice_out.monitor> driver: <module-null-sink.c> * index: 2 name: <nx_audio_in.monitor> driver: <module-null-sink.c>

How do I get applications to recognize the pulseaudio source as a microphone?

Shankar Ramamoorthy
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1 Answers1

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Got it working by remapping the source:

pacmd load-module module-remap-source master=nx_voice_out.monitor source_name=Microphone

I don't know why this works, since all I've done is to essentially rename the source. I've not remapped any properties of the original source. Perhaps applications do not like the .monitor in the name of the original source.

I also needed to unload the suspend on idle module:

pacmd unload-module module-suspend-on-idle

Otherwise pulseaudio sometimes suspends the remapped source and I'm unable to unsuspednd it.

Shankar Ramamoorthy
  • 11
  • 2