Microphone is not recording sound.

When I try to record, this happens.
$ arecord -d 5 test-mic.wav
ALSA lib pcm_dsnoop.c:618:(snd_pcm_dsnoop_open) unable to open slave
arecord: main:722: audio open error: No such file or directory
I got an HP pro book. Anyone have any tips on how to get it recording sound (video works fine)?

Is your user in the audio group (this may be different now with systemd)?  Sometimes you need PA to get the mic to record.

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