Volume disabled when plugging in headphones

Question

Level 1

9 points

Volume disabled when plugging in headphones

On a Macbook Pro, and having downloaded Yosemite during the Beta period, there have been no problems before this. However, recently, whenever I plug in my headphones, the volume slider button and sound itself appears to be disabled as shown in picture. Sound preferences panel/Audio MIDI setup also showed. Headphones work on Windows computer.

MacBook Pro, OS X Yosemite (10.10)

Posted on Oct 18, 2014 6:35 PM

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Answer 1

OGELTHORPE

Level 9

57,329 points

Oct 20, 2014 3:57 AM in response to phansceneth

phansceneth wrote:

On a Macbook Pro, and having downloaded Yosemite during the Beta period, there have been no problems before this.

I would reinstall Yosemite. There could very well be differences between your beta version and the current production one.

Ciao.

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Answer 2

phansceneth Author

Level 1

9 points

Oct 20, 2014 2:39 AM in response to kaz-k

Hi, sorry for late reply, I reset the computer's PRAM and I (think I) reset the SMC and the sound still appears the same(not working).

If resetting the SMC is just

'

Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.'

Then I have done that. Is there any other possible ways in which I could fix the sound?

Sorry for any inconvenience.

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Answer 3

kaz-k

Level 9

51,108 points

Oct 18, 2014 6:51 PM in response to phansceneth

Resetting NVRAM as well as SMC could solve the problem

OS X Mavericks: Reset your computer’s PRAM

Intel-based Macs: Resetting the System Management Controller (SMC)

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