tttxx
Level 1 (10 points)

Q: 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 5:55 AM

by Studio Engineer,Solvedanswer
Studio Engineer Studio Engineer
Level 2 (445 points)
A:

deluxeczech wrote:

 

I, too, am having this sound stuttering problem...and it all started after I upgraded to 10.8.  :-(    I have a 27" 3.1 GHz Intel Core i5 with 16GB of memory.  (My husband has an older 2009 model of the 27" and he is having the sound stuttering problem since ML too).  I can promise you that we had no such problems before upgrading, and are not ones to constantly install new software/games/etc.  We do both play World of Warcraft but have done so for a few years on our various Macs.  We don't listen to music or watch videos much on our desktops, so I cannot speak to other sound problems, but when playing WoW and using Ventrilo, there are occasional stuttering instances.  It is not very consistent (that is, always does it during X or Z).  In fact, using Ventrilo tonight and had no problems, but a week ago experienced stuttering when someone else was talking. 

 

I do wish Apple would AT LEAST release a statement acknowledging this issue.  We both work in IT development, so we understand that there are sometimes mystery problems that take time to troubleshoot.  NOT saying anything, however, just makes the company seem uncaring of its customers.  Personally, I would be a bit more content if I KNEW that Apple KNEW and that they were looking into it.

 

While not an ideal situation, it's good to know we are not alone in this...

 

 

Your problems will most likely be related to OS X "sandboxing" just about anything you do.... Sandboxing was supposed to be a "coherent" feature. But wound up being a total performance killa... Apple have been working on this issue a LONG time since 10.8.2.... hence them releasing more betas of 10.8.3 than (I think) any other beta OS X before that... A HUGE problem causing havoc with almost ALL 3rd pty. high performance software..

 

If you are a CRACK... You can google-search (goes beyond this here thread) ways of "overwriting" what OS X regards as "Items/processes which should be sandboxd"... To STOP this non sense...

 

We had to manually delete A LOT of files on the OS to get our system running to accommodate a pro-environment. Even "Files" that Apple forgot to delete themselves.......(Do the G-search or this thread WILL be deleted... hence me NOT going into details)

 

What COULD help you is to safe-boot ONCE and log in.. Then boot normally.. That in MANY cases will take of the problems (short-sighted-ly)... Each time you re-experience the issue... Redo aboe

 

IHTH

Posted on Mar 9, 2013 8:15 PM

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Q: Sound stuttering after Mountain Lion install

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  • by Carlo TD,

    Carlo TD Carlo TD Aug 12, 2012 12:40 PM in response to davidvoy
    Level 3 (558 points)
    Aug 12, 2012 12:40 PM in response to davidvoy

    Ask them to look at it, and vacume it out from dust. They will be glad to do that.

  • by davidvoy,

    davidvoy davidvoy Aug 12, 2012 12:48 PM in response to Carlo TD
    Level 1 (9 points)
    Notebooks
    Aug 12, 2012 12:48 PM in response to Carlo TD

    Im not even worried about that, i have a backup Carlo.  Im saying , OVERHEATING has NEVER happened before until upgrading to Mountain Lion.

  • by Carlo TD,

    Carlo TD Carlo TD Aug 12, 2012 12:57 PM in response to davidvoy
    Level 3 (558 points)
    Aug 12, 2012 12:57 PM in response to davidvoy

    It happened to me. I had an Apple Computer and the logic board went bad. Heat and dust are the destroyers of all computers or anything electronic. When the computer gets two hot, there is a safety that shuts it off. Either it needs to be vacumed, or the fan is not working, or it could be more serious, ie the logic board or something else. Sometimes.... think of a garden hose... Only so much water could pass through a garden hose at any given time. But then you upgrade the outdoor pipes out side and now you have the ability to have more pressure in the outside pipes (so you can wash your car in half the time now). Only your garden hose, had a weak spot but now that you have upgraded your pipes, and have better pressure, the soft spott on the garden hose is now turning into a noticible bubble in the garden hose. It is the same thing with a computer. Sometimes that extra pressure of an updated system... can cause a bubble (not a bubble litterally) but could bring out some problems that you were not aware before.

     

    Message was edited by: Carlo TD

  • by davidvoy,

    davidvoy davidvoy Aug 12, 2012 1:01 PM in response to Carlo TD
    Level 1 (9 points)
    Notebooks
    Aug 12, 2012 1:01 PM in response to Carlo TD

    I appreciate the concern, this is all 100% due to Mountain Lion Update .  It started immediatety after the update.

  • by Carlo TD,

    Carlo TD Carlo TD Aug 12, 2012 1:03 PM in response to davidvoy
    Level 3 (558 points)
    Aug 12, 2012 1:03 PM in response to davidvoy

    I understand... and it could also be just coincidence. Make an appointment. They will test out your system. If you need to get something fixed, do it before, this totally ruins your system. Having the computer shut of by itself because of heat, is a serious issue. Like it or not, you have to bring it to them.

  • by tttxx,

    tttxx tttxx Aug 12, 2012 1:04 PM in response to davidvoy
    Level 1 (10 points)
    Aug 12, 2012 1:04 PM in response to davidvoy

    Please stick to the topic guys.

    The issue is: sound stuttering/cracking (iTunes) at the headphones stereo output when there is rapid on screen movement like a full screen youtube video

    - coreaudio jumps to 10%.

    Could anyone check this has been fixed?

  • by Lvivske,

    Lvivske Lvivske Aug 12, 2012 1:05 PM in response to tttxx
    Level 1 (8 points)
    Mac OS X
    Aug 12, 2012 1:05 PM in response to tttxx

    I've installed 10.8.1, I'll let you guys know if it starts crackling again. So far so good (so what)

  • by Carlo TD,

    Carlo TD Carlo TD Aug 12, 2012 1:09 PM in response to tttxx
    Level 3 (558 points)
    Aug 12, 2012 1:09 PM in response to tttxx

    Have you tried a different admin account?

  • by tttxx,

    tttxx tttxx Aug 12, 2012 1:10 PM in response to Carlo TD
    Level 1 (10 points)
    Aug 12, 2012 1:10 PM in response to Carlo TD

    Check the first page of this topic. There is a long list of possibilities that were tried and it is 99% a Mac OS bug that just needs to be fixed by Apple.

  • by Carlo TD,

    Carlo TD Carlo TD Aug 12, 2012 1:15 PM in response to tttxx
    Level 3 (558 points)
    Aug 12, 2012 1:15 PM in response to tttxx

    I am here, right now trying to give ideas to you. The first page does not mention anything that I have suggested. So it is better not to send me to the first page but keep me on this page. I understand you have an issue, but don't take it out on me, or tell me to go look at page one. I would really like to see your system working. Checking a different admin account would eliminate hardware. Checking headphones in the jack, would test if some sort of short was occuring.

  • by davidvoy,

    davidvoy davidvoy Aug 12, 2012 1:17 PM in response to Carlo TD
    Level 1 (9 points)
    Notebooks
    Aug 12, 2012 1:17 PM in response to Carlo TD

    OMG carlo  , we all dont have a  **** SHORT in our outputs....  MY GOD!

  • by Carlo TD,

    Carlo TD Carlo TD Aug 12, 2012 1:18 PM in response to davidvoy
    Level 3 (558 points)
    Aug 12, 2012 1:18 PM in response to davidvoy

    Good Luck.

  • by Lvivske,

    Lvivske Lvivske Aug 12, 2012 1:49 PM in response to davidvoy
    Level 1 (8 points)
    Mac OS X
    Aug 12, 2012 1:49 PM in response to davidvoy

    For real, why isn't he reading?

  • by Crimguy,

    Crimguy Crimguy Aug 12, 2012 8:33 PM in response to Lvivske
    Level 1 (0 points)
    Aug 12, 2012 8:33 PM in response to Lvivske

    Carlo - appreciate the help.  I have the same problem.  There is no mass-failure of hardware going on.  The suggestions you give are appropo if there is an isolated incident.  This is not an isolated incident, and while some of your ideas may help find a workaround, they are not going to cure the bug in ML.

     

    So . . . anyone have an idea when 10.8.1 is being released?

  • by i.campbell,

    i.campbell i.campbell Aug 13, 2012 2:54 AM in response to tttxx
    Level 1 (0 points)
    Aug 13, 2012 2:54 AM in response to tttxx

    Re-posting in case it's helpful to those looking into the problem...

     

    Installed Mountain Lion on 3.1GHz 8Gb 27-inch iMac last week and noticed audio issue for the first time yesterday when I was running EVE Online (Mac Client) and Teamspeak. Same symptoms: everything is fine for 15 to 20 minutes then both voice communications and in-game audio get very choppy indeed. Shutting down the EVE client does not improve matters for Teamspeak and vice-versa. Currently, a reboot seems the only way to temporarily fix it.

     

    Been running the same under Lion for months without a single hitch. Now hoping a patch is realease sooner rather than later, before I get well and truly ganked !

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