No sound devices on MacBook pro 2012

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Knutifix Author

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 01:14 PM

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Answer 1

Top-ranking reply

TheLittles

Level 10

201,479 points

Feb 22, 2022 09:06 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.[...]"

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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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Answer 2

BDAqua

Level 10

250,031 points

Feb 22, 2022 08:59 PM in response to Knutifix

Try installing OS to an external drive.

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No sound devices on MacBook pro 2012

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