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

Reply
1,223 replies

Sep 23, 2012 7:53 AM in response to FrederikY

Frederik - before you believe too much, please keep in mind that Apple borked the graphics drivers on my 2007 iMac when 10.6.3 was released (in March, 2010!) and still hasn't acknowledged or fixed it. I have to manually install the 10.6.2 drivers every time there is an OS update.


https://discussions.apple.com/thread/2384136?start=1215&tstart=0


Sometimes they don't fix anything . . .

Sep 23, 2012 8:42 AM in response to tttxx

Hi, I spent about an hour on the phone with an Apple tech the other day and I posted the results at: https://discussions.apple.com/thread/4313421?answerId=19668032022#19668032022


Essentially, because I have migrated across many platforms and mac machines, there were a lot of third-party compnents in my Quicktime Library that were causing the stuttering. I was even getting this in iTunes. Anyway, my problem was solved via Apple techs. Hope you find it useful. Good luck.

Sep 23, 2012 2:58 PM in response to FrederikY

I still see it as an alternative for iOS/Mac Developers. Just squeeze this lame OS to a secondary minimum size partition just for the sake of firmware updates and developing iOS stuff, when you need. Use an OS that works and is seriously supported for the rest.


You may have never had any problems with Apple stuff, but the time has come anyway. As for all those people lost in forums that can be seen throughout the years.

Sep 23, 2012 3:10 PM in response to pepper_chico

One thing that is coming out of the back of this is my annoyance that I no longer trust an Apple product. My first iMac, my MacBook, my current iMac running Lion, my iPhone's and iPods have all worked flawlessly, but releasing an operating system, not just an app, but an operating system that shafts you and affects your business is causing some serious questions for me.


Had a stack of work to complete this afternoon, instead I spent it watching my mouse lag across the screen then freeze on numerous occasions before crashing.

Sep 23, 2012 3:37 PM in response to tttxx

Honestly, I think I'll give it to 10.8.3 -- 3rd time lucky, who knows? If it isn't sorted by then, I'm going straight to Digg, Reddit and the utterly merciless Register. It's going to be nigh on impossible for Apple to pretend the problem doesn't exist then.


I think the lesson I'm taking away from this sorry episode is to ignore 10.9 until it is documented as being stable.

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Sound stuttering after Mountain Lion install

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.