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Re: Microphone doesn't work



On Wed, 30 Oct 2019 23:41:58 +0100 (CET)
<sterbl.ta@tutanota.com> wrote:

> Don't know how to explain my problem (probably because I am not
> familiar with hardware and sound relation setting). Apology if
> description of my problem looks incompletely. My problem is when
> attending the online meeting, my laptop's microphone never worked at
> all. 
> 
> My laptop is HP 840 G5, and its audio should be
> https://support.hp.com/us-en/document/c05903000#AbT9
> <https://support.hp.com/us-en/document/c05903000#AbT9>
> 
> Environment I use:
> 
> kernel: 5.2.0-2-amd64
> Debian version: bullseye/sid
> 
> arecord --list-devices shows
> 
> **** List of CAPTURE Hardware Devices ****
> card 0: PCH [HDA Intel PCH], device 0: CX8200 Analog [CX8200 Analog]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> 
> Checking alsamixer, it looks like ok because microphone is turned on
> 
> https://imgur.com/fPBFMZo <https://imgur.com/fPBFMZo>
> https://imgur.com/e9Bbavf <https://imgur.com/e9Bbavf>
> https://imgur.com/2IQxVQd <https://imgur.com/2IQxVQd>
> 
> Following the instruction at
> https://linuxconfig.org/how-to-test-microphone-with-audio-linux-sound-architecture-alsa
> <https://linuxconfig.org/how-to-test-microphone-with-audio-linux-sound-architecture-alsa>
> for testing my microphone.
> 
> 1. Record sound produced by microphone 
> arecord -d 10 /tmp/test-mic.wav2. Reply the sound recorded 
> aplay /tmp/test-mic.wav
> I am sure I can hear the sound produced by my microphone. 
> 
> Unfortunately when attending all the meeting (such as google meets),
> even with permission is granted (allowing microphone and camera to be
> used temporary) my microphone never function (so people in the
> meeting never heard my voice). 
> 
> I suppose this could be something I miss or I am not aware. But the
> problem i do not know where to check the possible root cause, and fix
> it. 
> 
> I appreciate any suggestions! 

This looks more Firefox related rather than your desktop's issue. Check
the troubleshooting guide here
https://support.mozilla.org/en-US/kb/fix-common-audio-and-video-issues
and hopefully you ll find an answer.

-- 
Regards,
Nektarios Katakis


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