The problem I will present in this very specific article is not even close to being widespread (not even new!), But as has already happened with some users, it can happen to you too, and that is why we are here to help.
Since the end of 2007, some cases of users with audio problems on their Apple laptops from iBooks G4 to MacBooks Air have been reported on the company's own support forums and recognized by websites such as MacFixIt. Who sends the tip o Deny Dias, which has gone through something similar.
The very simple symptom: the machine suddenly stops making sounds. When the problem manifests, the audio icon disappears from the Mac OS X menu bar and no output device is shown in the "Sound" pane of System Preferences. In addition, if you try to increase / decrease the volume on the keyboard, a forbidden icon appears on the screen.
If you are experiencing this, follow these steps:
- Restart your machine (most obvious, but sometimes it works).
- Make sure that Mac OS X, QuickTime and iTunes are updated through Software Update.
- Plug in Apple headphones for a few minutes and then remove them.
- Clean the PRAM / NVRAM of your machine. To do this, restart your Mac by pressing Option + Command + P + R and wait for the third startup sound to play.
- Delete the audio caches from your Mac. A good tip for this is the OnyX tool, which we have already commented on here on MacMagazine.
If none of this works, the way to take your computer to an Apple authorized service center.
Share your experiences with us in the comments on this article!