Web11 feb. 2024 · 1. Shut down your Mac. 2. Press the power button, and as soon as you power up the laptop, hold down Command-Option-P-R. 3. Keep holding down those keys for about 20 seconds. Then let go and allow your Mac to continue starting normally. If you have an older Mac that chimes at boot, hold down the keys until you hear a second startup chime. Web26 feb. 2014 · I had no output from speakers, or headphones. And the System Preferences - Volume was greyed out. I tried everything up to including a PRAM reset and nothing worked. Took it to the company tech and after awhile he figured out what was wrong. The inner head phone jack was dirty. He cleaned it with a qtip or a special computer cleaning …
If your Mac starts up to a blank screen - Apple Support
Web14 aug. 2024 · There is a free app (available in the Mac App store) called LadioCast. This is a virtual mixer that allows you to pipe audio from a physical device to other outputs. In this situation, I'm using my RME Fireface UFX in LogicPro as my input and output device. In LadioCast in "Input 1" I have set channel 1 and 2 of the RME UFX (the main outputs) Web2 nov. 2016 · The technical specifications for the new MacBook Pro on all 13- and 15-inch models list the audio port as simply a "3.5-mm headphone jack" with no other amplifying information. In the 2015, and ... recycled viscose
Question / Help No audio output devices appear on my source
Web11 apr. 2024 · Finally, in case nothing helps, take your MacBook to an Apple Store or an authorized service center and have it inspected. ... How to switch audio output and input … Web11 feb. 2024 · Check System Settings: Open System Settings (System Preferences on pre-Ventura Macs) and click Sound. Click the Output tab and click on Internal Speakers. … Web6 oct. 2008 · Now I have the sound working again by resetting the PRAM. Here's how; Shut down your Mac. Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4. Turn on the computer. Press and hold the Command-Option-P-R keys before the gray screen appears. recycled vs virgin fibers