No audio in Target Display Mode

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No audio in Target Display Mode

Hi, I recently upgraded my 27", late-2013 iMac to Catalina and my 15" 2017 MacBook Pro to Big Sur and now my iMac has no sound when in Target Display Mode. I have confirmed the speakers still work. It seems to be related to upgrading my MacBook to Big Sur. I have already attempted the SMC reset with no luck. Any other suggestions?

iMac 27″, macOS 10.15

Posted on Mar 26, 2021 4:39 PM

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Answer 1

dialabrain

Level 10

134,297 points

Mar 26, 2021 7:22 PM in response to runningdrummer

"Target display mode requires macOS High Sierra or earlier on the iMac used as the external display. It does not work with macOS Mojave or later."

From: Use your iMac as a display with target display mode - Apple Support

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No audio in Target Display Mode

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