internal microphone not working

PikerFlinn wrote:

Unable to get the internal mic working, reset everything, still not working. Seems to have happened since install of MacOS Mojave

Try a SafeBoot  https://support.apple.com/en-us/HT201262

Takes noticeable longer to get to the login screen, does a 5-10 minute disk repair before it fully boots up, and certain system caches, dynamic loader cache, etc. get cleared and rebuilt.

You can test in this environment then reboot as normal and test.

i have exactly this issue right now. It is like all of sudden no audio built in hardware, it is vanished from the setting. I can confirm that the microphone does work when i use it in bootcamp situation. I suspect that there is bug in mojave. I dont know what else to do. Have you figured out yet?

PikerFlinn wrote:

Problem was foxed after taking the laptop in to the Genius bar, who said the MIC was disconnected following a recent repair (done by Apple) - then not reconnected when reassembling the laptop. Fine now, but very frustrating.

Thanks for the followup PikerFlinn !

Have you tried to go into the security preferences to allow whatever app you are trying to use to access the microphone?