The default source for audio capture is virtual echo-cancellation source created in PulseAudio
* index: 2
name: <echoCancel_source>
The echo-cancellation source is using the onboard audio card input source
device.master_device = "alsa_input.hw_0_0"
index: 0
name: <alsa_input.hw_0_0>
alsa.name = "92HD81B1X5 Analog"
There is no input source for the headset shown
only a sink monitor for capturing audio played to the headset
index: 7
name: <alsa_output.usb-Kingston_HyperX_Virtual_Surround_Sound_00000000-00.analog-stereo.monitor>
device.description = "Monitor of HyperX 7.1 Audio Analog Stereo"
The headset may have PulseAudio Profile set to ‘Output’ only instead of ‘Duplex’ (input + output)
Please post response to
pacmd dump
to show card profiles, and if audio source is muted or suspended