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No audio output device shown on MacBook Core 2 Duo

post #1 of 6
Thread Starter 
All of a sudden there is no audio output or input device listed in the audio control panel. All of the system alert sound section is grayed out and the volume up/down visual overlay display has a circle with an slash through it. Bottom line = I have no sound I/O.

Any one else run into this?
post #2 of 6
Try trashing your sound prefs. Users-library-preference-com.apple.sound.plist
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They spoke of the sayings and doings of their commander, the grand duke, and told stories of his kindness and irascibility.
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post #3 of 6
Thread Starter 
odd.. no sound pref exists.

On my other Macs where I use professional external and internal soundcards if I don't have one selected or connected no audio apps playback. I am getting similar behavior with iTunes on this machine - you hit play but it doesn't actually play, as if it's waiting for a loaded driver/device to be present.
post #4 of 6
Thread Starter 
Formatted + Reinstalled OS + Migrated User Data = Fixed.

post #5 of 6
Hujib, I have the same issue on my iMac G4. Did you also have issues with the power on - startup chime not being audible when you had the missing devices in your sound preferences?

Wiping everything clean and reinstalling is going to be a major pain for me. I am trying to avoid it if possible. However, if you had the issue with the chime as well, I will try it out before going to Apple.
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Most of us employ the Internet not to seek the best information, but rather to select information that confirms our prejudices. - Nicholas D. Kristof
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post #6 of 6
Thread Starter 
Quote:
Originally Posted by talksense101 View Post

Hujib, I have the same issue on my iMac G4. Did you also have issues with the power on - startup chime not being audible when you had the missing devices in your sound preferences?

Wiping everything clean and reinstalling is going to be a major pain for me. I am trying to avoid it if possible. However, if you had the issue with the chime as well, I will try it out before going to Apple.

No chime related issue with my mess. Using an external drive, I used "SuperDuper" to clone my existing machine to the external drive, booted off OS X Tiger DVD, formatted and reinstalled and then "migrated" user back to clean install. It took 3 hrs in total.
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