Hi all, I just bought a used Mac Pro running a fresh install of El Capitan 10.11.6 and have found that I can't get any audio to be produced. I have options for Internal Speakers, Line Out, and Digital Out in Audio Preferences. None of them work, including Line Out with headphones plugged in either the front or back jacks. I tried killing the coreaudio process, then restarting, but that hasn't helped. I see it using CPU when there should be audio playing. I don't have startup chimes either, so I can't tell if my PRAM restarts are doing anything. Any ideas? Thanks so much.
Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
No audio on Mac Pro (10.11.6)
- Thread starter lsara3699
- Start date
- Sort by reaction score
Maybe there is something here.
http://www.macworld.co.uk/how-to/mac/theres-no-sound-coming-from-my-mac-3504175/
You don't need the chimes to confirm if PRAM reset is working.
If it works (but speaker disabled), you will see the grey screen for few seconds, and then go black again. If you keep pressing Command + Option + P + R. This grey -> black cycle will keep repeating (around every 10 seconds, depends on your hardware config, may take a bit longer).
If PRAM reset work, but still no chime from the internal speak, that's something wrong.
If it works (but speaker disabled), you will see the grey screen for few seconds, and then go black again. If you keep pressing Command + Option + P + R. This grey -> black cycle will keep repeating (around every 10 seconds, depends on your hardware config, may take a bit longer).
If PRAM reset work, but still no chime from the internal speak, that's something wrong.
It sounds like you may have done this already, but plug some headphones into the front jack and see if that changes anything.
