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I have a laptop running 18.04 with a Realtek ALC269VC card and Pulseaudio. The speakers are working normally. Same when plugging headphones. But the internal microphone is not. No sound is produced although I see the bar here going somehow back and forth.

Micrphone level moving

Alsamixer configuration seems fine.

Alsa mixer conf

Already tried purging pulseaudio and alsa-base but no improvement. What could be the issue ? Thanks

dev93
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  • I have the same problem, only worse:my system (Kubutu 18.04) now doesn't even recognize the existence of any sound input devices. Needless to say, it wasn't this way until recently. My advice: be very wary of purging any sound-related modules such as pulseaudio. You may be destroying a lot more stuff than you bargained for. – Paul A. Aug 14 '20 at 03:48

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