Short, sharp noise from speakers when resuming from sleep

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Level 1

20 points

Short, sharp noise from speakers when resuming from sleep

This doesn't happen all the time, but sometimes when I lift the lid on my MacBook and wake it up, I get this short, sharp 'SHHH' noise come from my speakers that lasts about a second or so just after the screen illuminates. It can sometimes happen a second time, but the sound is even quicker but quieter. I've never had a hardware fault or even a problem with OS X since I bought the machine (touches wood) but I'm simply curious.

Thanks for any pointers 🙂

MacBook 1.83Ghz, 2GB RAM, 250GB HDD, Mac OS X (10.5.2), Windows Vista (Boot Camp)

Posted on May 13, 2008 1:19 AM

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Answer 1

Bob Lang1

Level 5

4,090 points

May 13, 2008 1:30 AM in response to laraAJ

Hi laraAJ

Is it possible that the noise isn't coming from the speakers at all, but rather from the CD/DVD drive?

My DVD drive makes a noise each time the MacBook wakes from sleep.

Bob

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Answer 2

laraAJ Author

Level 1

20 points

May 13, 2008 1:46 AM in response to Bob Lang1

Hi Bob,

Thanks for your reply but I'm sure it isn't that. My DVD drive makes that 'Do-do-do dooooo-do-do' sound every time I switch it on but that's totally different (and longer in length) in sound to what I'm getting here. It's like a sharp hiss from the speakers. Having said that, audio playback is perfectly fine from the speakers during every day use.

Thanks again.

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Answer 3

May 13, 2008 1:51 AM in response to laraAJ

The same problem here:

Short, sharp noise from speakers everytime when resuming from sleep!

Did you called the Apple Hotline?

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Answer 4

laraAJ Author

Level 1

20 points

May 13, 2008 1:55 AM in response to hello.yogi

Not yet, I wasn't sure it was an issue that's why I thought I'd ask; it seems I'm not the only one with this.

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Answer 5

May 13, 2008 2:28 AM in response to laraAJ

I called the Apple Hotline: they suggest to try an reset of the System Management Controller (SMC).

http://www.info.apple.com/kbnum/n303319

I will try it later today ...

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Answer 6

laraAJ Author

Level 1

20 points

May 13, 2008 2:29 AM in response to hello.yogi

Thanks for the info. Come back and let me know if it solved it for you yeah? 🙂 Thanks

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Answer 7

May 13, 2008 3:14 AM in response to laraAJ

It seems that the reset of the SMC fixed the problem!

It worked for me!

So, give it a try! 😉

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Answer 8

Squall91

Level 1

0 points

Jun 19, 2008 11:37 PM in response to laraAJ

I think the same thing is happening to me. I notice that sound when my computer is waking up from sleep and I try to change the volume. It happens for a brief millisecond but it's just a nuisance.

I tried resetting the SMC two different ways (the way listed in the article and the way Apple support told me over the phone). The way Apple told me (it's similar to the way in the article but it also involves holding down option + command + the P and R keys when turning on the computer again) works briefly - like once - and then the problem comes back.

Is this happening to anyone else?

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