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vocalite Author

Level 1

10 points

Sound issues: Volume goes up and down arbitrarily

So weird. Have been having this issue with my iMac for over a year now. Even when I move my mouse it goes up and down. Switched speakers and checked wires, it is still doing it. Any thoughts?

iMac 27", macOS 10.15

Posted on Nov 30, 2019 3:38 PM

Top-ranking reply

den.thed

Level 10

82,504 points

Posted on Nov 30, 2019 8:09 PM

Reset the SMC, as per > How to reset the System Management Controller (SMC) on your Mac - Apple Support

Then startup with an NVRAM reset, as per > Reset NVRAM or PRAM on your Mac - Apple Support

If those don't cure it > Use safe mode to isolate issues with your Mac - Apple Support

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Sound issues: Volume goes up and down arbitrarily

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