2 Macbook problems.

Problem 1: Have you plugged anything recently into the audio out port of the MacBook? If so, see if there is a red light on in the audio out port, which is the optical audio out.
Maybe you can solve that problem by plugging your headphones or amplifier back into the MB and out again.

Problem 2: The command should be working, it works for me.


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Have you also taken a look at MRoogle, since that question may have been asked several times?


from the forum rules:

Minor Problems

3. Thread titles.

Use thread titles that indicate the subject of the thread, not generic titles such as "Need help". Moderators may change thread titles that have no specifics, usually by adding something more specific in parentheses.
https://macrumors.zendesk.com/hc/en-us#Minor_Problems

i have had 2 fixes for that.

1. Reinstall 10.6.2 combo update if you didn't already.
2. Go to Utilities and open the AUdio Midi utility and make sure that Built-in Output is set for
Source: internal Speakers
Format: 44100 Hz


I've had to do that on quite a few machines at work.