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kbgressitt
Newcomer
June 3, 2024
Solved

No microphone audio

  • June 3, 2024
  • 3 replies
  • 30 views

Zoom is fully functional on my 2021 Macbook Air, but, when I connect to the Dell S2419H monitor, I have no microphone audio: class participants cannot hear me. I've reloaded Zoom, plugged and unplugged, rebooted, retested, and howled at the moon. Apple tech support couldn't resolve it, and my account doesn't qualify for Zoom tech support. Any suggestions anyone?

Best answer by SeanTong

Thanks, Sean. Please see my responses inserted in your message:

  1. which microphone are you using in zoom? >>> MacBook Air microphone
  2. does the microphone work with other apps?  you can test with voiceMemos.app which is a builtin app  >>> YES, it works with multiple apps
  3. does it work when you disconnect the Dell S2419H monitor? >>> YES
  1. could you choose another microphone in zoom and test it? >>> YES, it worked with an iphone.
  2. what's your macOS version?  >>> Sonoma 14.5
    Make sure DO NOT use builtin microphone when you close your MacBook Air lid, macOS will mute the sound. >>> I guess this is the issue then. However, since I first starting using Zoom with the laptop and the Dell monitor—in 2021—I’ve always closed the laptop lid and had no problem with the laptop microphone: Until recently, the microphone has always worked with the lid closed when I'm using Zoom and the monitor. I’m particularly curious about this sudden change, given that the laptop speaker continues to work with the lid closed. . . . Am I now just out of luck?

Hi @kbgressitt I think you may upgrade your macOS version, Sonoma 14.5 is the latest, macOS will mute builtin microphone's sound to keep privacy when lid is closed since MacOS version 14.0[not very sure which version], so I suggest you using another microphone if you want to keep lid closed

3 replies

MGSR
Community Manager
MGSR
Community Manager
June 3, 2024

Hello @kbgressitt 

Welcome to the Zoom Community! We're glad to see you here.

A possible reason is that when you are plugged in to the monitor, it uses a different microphone.
Check your audio once connected and change it to the preferred microphone. 
You may also check out this article for further troubleshooting.

K
Newcomer
kbgressittAuthor
Newcomer
June 3, 2024

Hi, Mark, and thanks for the swift reply!

I've done everything suggested in the troubleshooting article—and more. My university IT folks couldn't figure it out and referred me to Apple folks, who couldn't figure it out and referred me to Zoom. I should have added that it was all working—the laptop with the monitor—until a couple weeks ago. No new hardware or software; the mic just went silent. . . . Any other suggestions?

KB

    S
    Employee
    SeanTong
    Employee
    February 10, 2025

    Sean, I'd love your input.  I have Zoom 6.3.6, Mac OS Sonoma 14.6.1, and Focusrite Scarlett Solo using Focusrite Control 2 1.449.0.26180 Firmware 1.2.2188.0. I am running an EV RE27 mic into the Scarlett.

    I get indicator actions on the system input settings meters as well as on the Focusrite Control 2 meters.  I do not get input on Zoom.  Zoom does get and display input from laptop mic and wireless heaset mic (Apple Airpods Max).

    I have been through every setting repeatedly and patiently, as everyone, including two AI Bots, have started me at the same place - permissions, system setting, Zoom settings, etc. through collectively hours of troubleshooting, without success.

    Is this an OS issue, a Zoom issue, a Focusrite issue, or is it unknowable?  Can you help?  I am very frustrated!   Thank you.


    Hi @Altb , so sorry to hear about that, but I'd like to get some information first.

    1. what's your Focusrite Scarlett model?

    2. how many input channel?  if input channel are more than 2, try to input 1st or 2nd channel 

    Then , try different settings in zoom

    1. settings--> audio --> Zoom background noise removal --> Low

    2. also you can try to use Original sound for musicians , which keeps the original sound without denoise algorithm

     

     

    B
    Newcomer
    bob36
    Newcomer
    August 2, 2024

    I have this same issue. None of the above has resolved it. 

     

      MGSR
      Community Manager
      MGSR
      Community Manager
      August 5, 2024

      Hi @bob36,

      Welcome to the Zoom Community! We're glad to have you here.
      May I know what device you are using, what operating system, and what microphone?
      Just to confirm as well, have you tried the troubleshooting steps in the article?

      F
      Newcomer
      fatirsahi
      Newcomer
      June 19, 2025

      That sounds frustrating! One thing to check: when you connect your Dell monitor, macOS might be auto-switching the input/output devices. Go to System Settings > Sound > Input and make sure your MacBook’s built-in mic is still selected (not the Dell, which doesn’t have a mic). Also, double-check Zoom's audio settings—sometimes it defaults to a different input when a new device is connected.

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