Desktops
Q: My internal speakers are not working and are missing in the settings.
My sound output doesn't have any option to turn on my Internal Speakers, it only says Optical Digital-Out port.
I searched the support community and found this solution; I tried this solution twice and the problem still has not been fixed.How to Reset NVRAM on your Mac - Apple Support
MacBook Pro, OS X Yosemite (10.10.2)
Posted on Sep 8, 2015 1:45 PM
by dominic23,Solvedanswer
Mac OS X
1.Plug in and remove the headphone.
If you see red light in the headphone port, plug the headphone
in and out of the port 5 or 6 times to flip the microswitch inside.
Sound output may be stuck in the digital mode.
2. Reset SMC.
Choose the method for “On Mac notebooks with non-removable battery”.
Posted on Sep 8, 2015 2:23 PM