Sound stuttering after Mountain Lion install

Dear community,


after having installed OSX Mountain Lion my sound startet stuttering whenever there is rapid movement on my screen.

This includes e.g. window movement, scrolling through image loaded websites or video playback (flash player, quicktime).

A restart didn't help. I'm using stereo output, not digital.


I have connected a second monitor but the problem persists after disconnecting it. Movement on the second monitor also causes the sound to stutter.

My GPU Diode temperature is at 85°C (there is some bug that keeps the GPU under load while a second monitor is connected AFAIK), but I guess it was the same under Snow Leopard.


In Snow Leopard the sound output was always perfect even under heavy load or heavy HDD I/O.


Any ideas?

iMac (27-inch Mid 2011), OS X Mountain Lion

Posted on Jul 28, 2012 5:48 AM

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1,223 replies

Sep 27, 2012 2:53 PM in response to tttxx

I just emailed David Pogue with details and links. Perhaps he or some of his very influential contacts will consider this issue for an article.


For those on this forum who are Twitter savvy, can you start threads about this issue? The more widespread we can publish this problem (outside of this forum) and the more press we can generate, the more likely it will be that Apple will bump this problem up in priority.

Sep 27, 2012 3:10 PM in response to pepper_chico

Yes, something like that. A search on google for "os x freeze" turns up an entirely different issue.


Although this sound/video stuttering problem *can* lead to a total system freeze, it usually doesn't for most users. It more often leads to a total sound (and/or video) freeze.


I'm certainly not trying to nitpick here. I just want to make sure that anyone with this stutter problem could easily find the Twitter posts.


Again, I will defer this to those of you who are avid Twitter users.


David

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Sound stuttering after Mountain Lion install

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