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Level 1

0 points

Audio not working on 27" display, Mac Mini

I received my new display last week - was working great, including the sound. Now, I can't get any audio output out of the display at all. (Switching to the built-in internal speaker works fine, so I know it's not a general issue.) I installed the relevant software update soon after plugging in the display.

This seems like a software issue to me because some other things are weird. When the audio output is set to Display Audio, changing the volume up and down is very slow instead of instant. It actually takes a few seconds to register the up or down volume keypress. If I drag the volume slider in system preferences > Audio, I even see the wheel icon spinning for a while. Although no volume setting results in any sound output.

I restarted the computer and unplugged / replugged both the mini display port and the USB connection. Any ideas?

(The display part works fine, BTW!)

Thanks - ATM

Mac Mini (not the latest one but one generation previous), Mac OS X (10.6.4)

Posted on Oct 4, 2010 8:41 AM

34 replies

deletem3

Level 1

4 points

Oct 7, 2010 11:22 AM in response to fox7

fox7's solution of shutting down, then unplugging the power to the display allows the sound to work again.

Oct 7, 2010 2:01 PM in response to deletem3

fox7's solution isn't really a solution. It only works temporarily.

My quick fix is to hit the sound keys on the keyboard. Sound will play for a bit until it decides to stop working again.

Can someone please mark this thread as UNANSWERED?

Mictons

Level 1

8 points

Oct 9, 2010 5:35 AM in response to atmcclain

Having the issue again this morning, calling Apple Support to document the issue once again.

Oct 10, 2010 6:44 AM in response to Mictons

I'm having the same issue with my new 27" display - older Mac Mini, shutting down the computer and turning it back on again restores the sound. I'm also not seeing the "LED Cinema - DisplayPort" option in the Sound preferences and am using the "Display Audio - USB" option.

Oct 12, 2010 9:15 AM in response to atmcclain

BUMP +1

Yes. I'm having this same issues. I have two 27" displays and one still has audio when the main display's audio dies.

I also have strange lagging issues, as others reported.

I have no preference file to delete and the "unplugging/plugging" fix is only temporary. It does however fix the problem.

Both iSight cameras work so far. Both microphones work. USB ports work perfectly.

The display works fine although during one try of Migration Assistant, it was flickering/static and lost signal a few times. (Though this might just be an isolated random occurrence)

Sounds like a software update to me too.

Thanks for the post all.

Oct 13, 2010 12:30 PM in response to atmcclain

Audio from the display not working this morning after working fine for a couple of weeks. Called support. They had me do the "unplug hold power button 5 secs" trick. Works again. But I explained that this is obviously a widespread issue. They gave me a case number. I think they are tracking this and I would expect a permanent fix pretty soon.

Mictons

Level 1

8 points

Oct 15, 2010 12:09 PM in response to melduforx

Well here is my latest update, after 4 calls over a period of two weeks I just got off the phone with Apple support and they are sending me a new monitor. This makes me think this issue is not software related so if you are having this issue I suggest you get calling and call every time it occurs, that is what I did. I will let you know when I receive the new one and if it has the same issue.

ctlsmite

Level 1

4 points

Oct 18, 2010 8:44 AM in response to atmcclain

Same issue here.

I've noticed that while this issue is happening, the volume adjustment is really slow. I hit the buttons on my keyboard to raise/lower the sound, and the icon in the UI doesn't popup for a couple seconds. It's acting sluggish.

Apple? Are you listening?

Jah Red

Level 1

0 points

Oct 18, 2010 9:01 AM in response to atmcclain

Same issues here Apple please fix this asap for what i paid i cant be restarting my display every other day!

Oct 22, 2010 10:42 AM in response to Jah Red

My new monitor does the same and since it hasn't been two weeks yet, I'm considering returning it. What do you all think?

atmcclain Author

Level 1

0 points

Oct 22, 2010 11:12 AM in response to BruceL1965

My personal opinion - this really doesn't seem like a hardware issue. I'm not at all sure that returning the monitor and getting a new one would solve the issue. It seems very likely (given the large number of responses on this thread) that you'd end up with the same issue all over again. Except you would have had to box everything up, drive to the store and back, etc. My hope is that any day now there will be a "Cinema Display 1.0.1 Software Update" that will resolve everything...

Of course I really have no way of knowing - I am surprised that Apple doesn't have reps who monitor these forums and could post with some useful information.

I was just thinking this morning though that I'll go through the trouble to at least call and get a ticket number, in case it does turn out to be a hardware issue or something else that requires replacement / repair.

Best - ATM

Oct 23, 2010 10:22 AM in response to atmcclain

I have this same issue. I added more details about the problem in this (larger) thread:

http://discussions.apple.com/thread.jspa?threadID=2611014

atmcclain wrote:

Of course I really have no way of knowing - I am surprised that Apple doesn't have reps who monitor these forums and could post with some useful information.

When I called support, I mentioned that I saw from the forums that a lot of people were having the same problem. The "senior advisor" said "Honestly, I don't spend a lot of time looking through the forums". I said "Well, neither do I, until I have a problem." 😉

It seems to me it would be a good idea for Apple to have someone listening/interacting on these forums. It has been useful for me to at least know that some others are having the same problem, you'd think that would be useful information for Apple Support, too!

Everyone who has this problem should call Apple Support and get a case number. I imagine that is something they monitor.

mmayo

Level 1

0 points

Oct 24, 2010 6:04 PM in response to Ricky Egeland

One day old monitor - same issue.....Need a software update Apple......

newpixel

Level 1

0 points

Nov 2, 2010 8:40 PM in response to atmcclain

I'm having the same issue. Restarting worked a few times (stopped working after about 2 times) but in the end I needed to unplug the power to the monitor to get it to work again.

I'm using a Mac Mini bought Feb of this year. Are there any updates yet?

IC3D

Level 1

0 points

Nov 6, 2010 3:39 PM in response to fox7

I did this and it worked. It was the first time it happening since I bought it about 1 week ago. Definitely Apple needs to send us out a update that will fix this issue!

<3 Apple.

Audio not working on 27" display, Mac Mini