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Ok, this is strange problem, and I couldn't find any solution for it yet.

This happened today then @work I plugged in external speakers jack, speakers was playing, everything was OK. But after I took jack off, I couldn't hear any sound from mac speakers. It seems like disabled. So now I only can listen music through headphones or external speakers but not mac speakers.

Here is a few screen-shoots:

Headphones jack in:

Top Menu Icon:

Jack In

When I press increase sound button on the keyboard:

Jack In

Sound Settings:

Jack In

Headphones jack out:

Top Menu Icon:

Jack Out

When I press increase sound button on the keyboard:

Jack Out

Sound Settings:

Jack Out

If you had similar situation or you know how to solve this, please do not hesitate and help me ;)

Btw, I've tried to repair permissions and restart mac (few times), didn't helped...

share|improve this question
    
That last sentence... "Did you try turning it off and turning it on again?" :-D – Shiki Jun 10 '10 at 18:09
    
yes, i have tried this :D as well. – Lukas Šalkauskas Jun 10 '10 at 18:20
up vote 4 down vote accepted

This happens when your Mac thinks that a mini-TOSLINK device is plugged into the jack. (If you look, you'll be able to see a glowing red light inside). The volume can't be adjusted by the computer with digital audio, which is why you are unable to adjust it. If a restart doesn't help, it could be that there is excessive dust or dirt inside the speaker jack. Try cleaning it out with some compressed air; it's helped me many times in the past.

share|improve this answer
    
yes I see the red light inside of it. Ok I will try to clean it out, let you know if it helped. – Lukas Šalkauskas Jun 10 '10 at 18:28
    
Yes it fixed the problem!!!! than you very much dude ;) – Lukas Šalkauskas Jun 10 '10 at 18:30
    
Im embarrassed always when I see him answering questions I dont have an idea of. Guess you'll be a good IT expert purple. :) – Shiki Jun 10 '10 at 18:33
    
's what I'm here for, @Lukas! And thanks @Shiki, I most certainly hope to be one day! – squircle Jun 10 '10 at 19:19

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