I have no sound on my MBP. No output device found

[dunnjp]

Since upgrading to Lion (Currently running 10.7.2) I have no sound output from my computer. I have a late 2006 15" MBP.

When I open Audio MIDI Setup, this is what I get

I know its not a bad sound card because my start up chime works.

Thanks for your help

 

[Giaguara]

I thought that was fixed by 10.7.2 already (at least for input sound not being recognized).

Reset PRAM - that might be able to solve it for you. Hold Apple-Alt-P-R down at boot (more about PRAM and what is stored in it and what the reseting does is in the link)

 

[dunnjp]

Apparently it wasn't. I already tried resetting the PRAM, still having the same problem. I tried booting into safe mode, "killall coreaudiod" in terminal, resetting the SMC. Garageband doesn't open either. says driver was not found

 

[midijeep]

If you look into the Jack where your headphones or external speakers plug in, do you see a RED Light?

Try a minute tinkle of WD-40 onto the headphone jack and then insert and pullout the jack several times, followed by gently inserting and removing the audio input jack a few times. At least until the sound is returned to normal and red light ceases to glow from the audio output jack.

I believe this is a "mechanical issue, not a software one".

Did you recently install something?