If you do them all at once in a row, and suddenly your Output audio is working, you will never know what fixed it. The interesting thing is, when rebooting my computer, I did hear the start up chime, but as soon as I got to the login screen, the output audio was not working.Įach of these steps should be done independently and then tested. While I cannot guarantee that any of these will work (you may indeed have a hardware issue or something else going on), these possible fixes only take a few minutes to test. Before you throw you laptop out the window, or spend time and money bringing your computer into the Apple store to talk to the Genius Bar, you should test out each of the items below. It seems that this odd issue happens all of the time to people, so I wanted to provide 7 things that you could try before deciding it is a hardware problem (which it could well be). Sound Input was fine and the built-in microphone responded to sound. When I went to check the Sound Preferences Pane, it showed that I had no devices whatsoever. Clicking the volume keys or the mute button did nothing, no sound, and basically the onscreen display showed a symbol that indicated there was no device for the sound output anyway.
See the dimensions: 1920 x 1080.A few days ago, my MacBook Pro decided suddenly to tell me that it had no Output Audio Devices for sound. To confirm the screen resolution on the external display (HDTV), I just took a screenshot of the entire desktop (Shift+Command+3). (At this time, MacBook just displays the desktop wallpaper). TIP: If you’re controlling the external display using MacBook only, then it’s recommended to turn its screen brightness and backlit keyboard light down to 0% to save the battery. MacBook Pro display working in full-screen on HDTV For controls, you need to use MacBook or you can attach a wireless keyboard and mouse for more comfort. That’s it! Now you’re ready to use your HDTV as an external display to watch movies, photo slideshow, etc.
In ‘Color LCD’ window, open the Arrangement tab and Uncheck Mirror Displays option.The current resolution of your MacBook Pro would be listed. You can enable ‘Show displays in menu bar’.
How to connect MacBook Pro to TV with HDMI If you see “HDMI/ DisplayPort Output”, then your MacBook Pro does support HDMI audio out. Under Hardware, click “Audio (Built In)”. Click “About This Mac” and then “More Info…”, click System Report. Note: Only MacBook Pros April 2010 and later support audio, but if you want to check to know for sure, click the Apple logo in the top left corner.