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User profile for user: Knutifix
Knutifix Author
User level: Level 1
4 points

No sound devices on MacBook pro 2012

Hello,


I've recently lost all sound on my MBP mid-2012 running Catalina 10.15.7.


In System Report under Audio, no devices show up.


Same in Audio MIDI setup.


I've tried the steps in this forum thread (reset SMC, NVRAM/PRAM, safe boot, playing with kexts) to no avail.


When turning on the machine, the boot chime sounds, so the speakers are operational, and on a firmware level things seem to be alright, so I'm assuming it's an OS problem.


Has anyone seen this problem before? Or better yet, has anyone found a solution?



Kind regards,

Posted on Feb 22, 2022 1:14 PM

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User profile for user: TheLittles
TheLittles
User level: Level 10
195,681 points

Posted on Feb 22, 2022 9:06 PM

Knutifix Said:

"No sound devices on MacBook pro 2012: Hello, I've recently lost all sound on my MBP mid-2012 running Catalina 10.15.7.[...]"

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Reinstall the macOS:

Nothing would be lost, it's just that sometimes changes(i.e. macOS Upgrades) are made to your system, and then then drivers (i.e. for speakers) become lost. When reinstalling, deleted files are reinstalled, and misplaced files are moved back to where they should be. Go Here: How to Reinstall macOS from macOS Recovery - Apple Support

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User profile for user: TheLittles
TheLittles
User level: Level 10
195,681 points

Feb 22, 2022 9:06 PM in response to Knutifix

Knutifix Said:

"No sound devices on MacBook pro 2012: Hello, I've recently lost all sound on my MBP mid-2012 running Catalina 10.15.7.[...]"

-------


Reinstall the macOS:

Nothing would be lost, it's just that sometimes changes(i.e. macOS Upgrades) are made to your system, and then then drivers (i.e. for speakers) become lost. When reinstalling, deleted files are reinstalled, and misplaced files are moved back to where they should be. Go Here: How to Reinstall macOS from macOS Recovery - Apple Support

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No sound devices on MacBook pro 2012

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