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Plain Mac OS X installation (10.6.8), and all of a sudden the audio stopped working. I get visual feedback upon changing volume with the keyboard, and the icon in the top right reports that audio is at full volume. Internal speakers are handling sound. Ask for more information if you need it... I'm not sure what else to give.


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up vote 1 down vote accepted

Look in Activity Monitor to see if coreaudiod is running properly, if not there may be problems there.

You may also try re-installing Mac OS X from the discs that came with your computer, or you can install a virtual machine and run another OS through it to see if you get sound to function correctly.

If it is hardware, you could try a PRAM reset (do this before the re-install idea), if you don't know what that is then at start up hold Cmd+Alt+P+R, wait for four start up chimes, then stop.

You could also reset SMC, but I don't think it will do anything.

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Thank you! The audio daemon was not running. – tekknolagi Jun 12 '12 at 22:21
I figured this out a while after I asked and forgot to close the question. – tekknolagi Jun 12 '12 at 22:21

Try going to system preferences > sound > output and making sure Internal speakers is selected.

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And try listening through the earphone connector. (And consider that the switch in the earphone connector may be stuck in "earphone" mode.) – Daniel R Hicks Mar 31 '12 at 3:00
Cole, did you even read the question? "Internal speakers are handling sound." – tekknolagi Mar 31 '12 at 5:13
Also I will try that, DanH – tekknolagi Mar 31 '12 at 5:53
@tekknolagi Yes I did read it. By internal speakers are handling sound I assumed that that meant you were expecting to hear sound from them but it wasn't working. Is that assumption incorrect? – Cole Mar 31 '12 at 17:11
Nope. They were selected to handle sound in the System Preferences. – tekknolagi Mar 31 '12 at 23:35

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