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 dcollett.seattle,

    dcollett.seattle dcollett.seattle Sep 27, 2012 3:10 PM in response to pepper_chico
    Level 1 (5 points)
    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

  • by LouFace,

    LouFace LouFace Sep 28, 2012 5:04 AM in response to dcollett.seattle
    Level 1 (0 points)
    Sep 28, 2012 5:04 AM in response to dcollett.seattle

    I agree. When the issue first started for me (very recently) I searched for 'sound/video stuttering Mountain Lion' and 'audio crackling Mountain Lion'. There was no freezing involved.

  • by FrederikY,

    FrederikY FrederikY Sep 28, 2012 6:03 AM in response to tttxx
    Level 1 (0 points)
    Sep 28, 2012 6:03 AM in response to tttxx

    What I can sum up after 10.8.2: The problem became a lot more calculateble for simple things like iTunes (only one stutter every ≈10 minutes, still not acceptable), but when playing a game while listening to music (minecraft, xonotic, …) still causes very hard stuttering.

    AND my iMac became a lot cooler: You can touch it/him now without get fried hands!

  • by bms82,

    bms82 bms82 Sep 28, 2012 11:02 AM in response to tttxx
    Level 1 (0 points)
    Sep 28, 2012 11:02 AM in response to tttxx

    what's up with the new discussion that's locked?

  • by dcollett.seattle,

    dcollett.seattle dcollett.seattle Sep 28, 2012 11:58 AM in response to bms82
    Level 1 (5 points)
    Sep 28, 2012 11:58 AM in response to bms82

    bms82, which new discussion?

  • by dcollett.seattle,

    dcollett.seattle dcollett.seattle Sep 28, 2012 11:59 AM in response to pepper_chico
    Level 1 (5 points)
    Sep 28, 2012 11:59 AM in response to pepper_chico

    Pink Mink & pepper_chico, and others:

     

    Has anyone started anything on Twitter yet? Thanks.

  • by FrederikY,

    FrederikY FrederikY Sep 28, 2012 12:29 PM in response to bms82
    Level 1 (0 points)
    Sep 28, 2012 12:29 PM in response to bms82

    why is what locked?

  • by Jazzman,

    Jazzman Jazzman Sep 28, 2012 4:33 PM in response to tttxx
    Level 2 (160 points)
    Sep 28, 2012 4:33 PM in response to tttxx

    Last night out of frustration I booted to the recovery disk on my iMac and reinstalled the OS 10.8.2. It took an hour to download and another 30 to install. I didn't have much time to play with it last night. Today when I got home I started listening to my AIFF library at 3:30 p.m., and now have been listening until 6:29 p.m. I have not heard one stutter. I've gone wide screen, ripped two CD's, used Timemachine to back up my iMac (large back-up to an external Firewire hard drive and a second to a network hard drive after the new copy OS was installed). So far no stuttering. I won't declare it fixed. Maybe I just got lucky? We will see how long this lasts.

  • by dcollett.seattle,

    dcollett.seattle dcollett.seattle Sep 28, 2012 8:42 PM in response to Jazzman
    Level 1 (5 points)
    Sep 28, 2012 8:42 PM in response to Jazzman

    Jazzman

     

    1. did you erase/format the drive before installing 10.8.2?

     

    2. are there any apps, plugins, etc. that you *didn't* put back?

     

    3. Is it still working perfectly w/o stutters in audio or video, even full screen?

     

    Thanks.

  • by markfrommississauga,

    markfrommississauga markfrommississauga Sep 28, 2012 10:35 PM in response to Jazzman
    Level 1 (0 points)
    Windows Software
    Sep 28, 2012 10:35 PM in response to Jazzman

    I still think it is the hard start, or cold boot of the iMac that makes it perform for about an hour or more without the audio trouble.  BUT sooner or later it will catch up and the problem starts again!  Minimize iTunes, pause a DVD, they all help but only for a few seconds!  Restart and it may take minutes, Reboot and it may take an hour but the problem still happens!  I want to reinstall Mountain Lion, but I don't want to put up with this again!

      I've just had over 4 lazy hours of iTunes movies and Elgato TV watching and never had a Single problem!  All because I went BACK to the CLONE of LION I made before upgrading to Mountain Lion!

      I hope enough Key words we generate on this thread will lead Someone at Apple to find out how bad this is and fix this bloody mess so we can enjoy the benifits of the new OS without any compromises!  Macs are  Video and Audio based PCs so  why have some of the latest Generation machines failed using the latest Operatiing system!

  • by FrederikY,

    FrederikY FrederikY Sep 29, 2012 3:09 AM in response to markfrommississauga
    Level 1 (0 points)
    Sep 29, 2012 3:09 AM in response to markfrommississauga

    My first stutter occurs 30 seconds after boot up.

  • by MauBro,

    MauBro MauBro Sep 29, 2012 4:28 AM in response to tttxx
    Level 1 (0 points)
    Sep 29, 2012 4:28 AM in response to tttxx

    After clearing both my caches (~/Library/Caches and /Library/Caches) and restarting OSX my sound stutter seems to be gone... (2011 27" iMac)

  • by Pink Mink,

    Pink Mink Pink Mink Sep 29, 2012 6:06 AM in response to MauBro
    Level 1 (0 points)
    Sep 29, 2012 6:06 AM in response to MauBro

    Had a crash this morning. Wasn't doing anything, I was away from the computer and came back to find the login screen then a message to advise it restarted due to an error.

     

    I've downloaded Onyx and have cleared everything down. I've left the computer running so we'll see if it suffers another crash when I get back home later.

  • by FrederikY,

    FrederikY FrederikY Sep 29, 2012 7:09 AM in response to Pink Mink
    Level 1 (0 points)
    Sep 29, 2012 7:09 AM in response to Pink Mink

    I advocate to NOT use these tools!

    They often destoy more than they help!

  • by Jazzman,

    Jazzman Jazzman Sep 29, 2012 8:01 AM in response to dcollett.seattle
    Level 2 (160 points)
    Sep 29, 2012 8:01 AM in response to dcollett.seattle

    dcollet.seattle

     

    Jazzman

     

    1. did you erase/format the drive before installing 10.8.2?

     

    No I did not wipe the drive, just reinstalled the OS via the recovery drive (which I still think downloaded a fresh copy)

     

    2. are there any apps, plugins, etc. that you *didn't* put back?

     

    No-But working with Apple Care I had earlier shut down Drive Genius 3, a Western Digital HD monitor in the menu items and reset SMC. My issues continued until I did the simple OS re-install. Maybe the reinstall wiped out any hidden processes they were still running?

     

    3. Is it still working perfectly w/o stutters in audio or video, even full screen?

     

    Yes, it worked the rest of the night running for about 6-7 hours total. I don't claim to have the total solution. I'm as concerned as eveyone else that this is a Mountain Lion issue that Apple needs to address.  I'll be reading everything that comes out of this thread and report to the group if I get the issue again.

     

    I'm still holding my breath that the reinstall of the OS is just a temporary fix like a reboot. But even reboots didn't originally fix my problem. Good luck everyone!

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