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HP 27FW 27 inch Monitor with Audio: no Sound | MacRumors ...
https://forums.macrumors.com/threads/hp-27fw-27-inch-monitor-with-audio-no-sound.2303615/#:~:text=Verify%20that%20the%20Mac%27s%20port%20works%20with%20other,it%20to%20patch%20different%20devices.%20Mac%20Hammer%20Fan
Rear audio headphone jack not working - Apple Community
https://discussions.apple.com/thread/1085309
Go to your system prefs > audio > output. Make sure that your analog line out is enabled. I had to do this on my Mac Pro when I first got it too. If it still doesn't work then you probably have a faulty jack.
The headphone jack on my MacBook Pro just stopped working ...
https://apple.stackexchange.com/questions/55243/the-headphone-jack-on-my-macbook-pro-just-stopped-working-how-do-i-fix-it
The headphone jack on my MacBook Pro stopped working. It was working fine, then just spontaneously stopped while I was using external speakers plugged into the output jack. Now, neither speakers nor 3 different headphones have sound. The …
Mac Pro Rear Jack Audio Under Bootcamp Fixed - MacRumors
https://forums.macrumors.com/threads/mac-pro-rear-jack-audio-under-bootcamp-fixed.1051665/
I've read that many people have been struggling to get the rear audio jack their Mac Pro to behave under bootcamp. The issue stems from the Realtek drivers 'Jack Detection' which normally allows windows to detect when you plug in headphones or speakers. On some Windows PC's the Realtek Audio...
Audio line out on back not working | Mac Support
https://macosx.com/threads/audio-line-out-on-back-not-working.304657/
Try resetting the PRAM (hold Option-Command-P and R, while you restart. Listen for the boot chime. Continue to hold those same 4 keys until you hear the boot chime 2 more times, and release the keys. Try your audio. Still not working? Take in for service, the logic board will likely be replaced.
If the internal speakers on your Mac aren't working ...
https://support.apple.com/en-us/HT203186
Check your sound settings. First, disconnect any cables from the USB, Thunderbolt, or 3.5mm audio ports on your Mac. From the Apple menu , choose System Preferences. Click Sound. Click the Output tab, then select the built-in speakers. If you don’t see built-in speakers as an option in the Output window, contact Apple Support. If the Output ...
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