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 sixfour,

    sixfour sixfour Sep 17, 2012 7:19 AM in response to ArchiResearch
    Level 1 (0 points)
    Sep 17, 2012 7:19 AM in response to ArchiResearch

    1)Reset SMC

    2)then PRAM right after you turn on the computer

    3)Clean the whole Mac cache (under your user folder/library/cache and mac HD folder/library/cache)

    4)Create a new user account, play a youtube fullscreen video, if no stuttering, change back to your original user and delete that new user account you have just created.

     

    This fixed the problem for me anyways..

     

    No more stuttering using either onboard sound card orexternal MOTU ultralite interface.

  • by DavidFromFocusriteNovation,

    DavidFromFocusriteNovation DavidFromFocusriteNovation Sep 18, 2012 9:49 AM in response to d0nny2600
    Level 1 (100 points)
    Sep 18, 2012 9:49 AM in response to d0nny2600

    Hi d0nny2600,

     

    The current Saffire 6 USB driver is not yet compatible with Mountain Lion.  Please download our Mountain Lion-compatible beta driver from beta.focusrite.com.  You'll want to get Focusrite USB Driver 2.6b3.

     

    Best,

     

    David Tichauer // Focusrite Technical Support

     

    I may receive some form of compensation, financial or otherwise, from my recommendation or link.

    <Edited by Host>

  • by FrederikY,

    FrederikY FrederikY Sep 17, 2012 9:16 AM in response to davidvoy
    Level 1 (0 points)
    Sep 17, 2012 9:16 AM in response to davidvoy

    Celsius or Fahrenheit-scale?

  • by FrederikY,

    FrederikY FrederikY Sep 17, 2012 9:18 AM in response to DavidFromFocusriteNovation
    Level 1 (0 points)
    Sep 17, 2012 9:18 AM in response to DavidFromFocusriteNovation

    @DavidFromFocusriteNovation do you have a tip for the others of us who have the same issues with internal sound cards?

  • by FrederikY,

    FrederikY FrederikY Sep 17, 2012 9:23 AM in response to sixfour
    Level 1 (0 points)
    Sep 17, 2012 9:23 AM in response to sixfour

    @sixfour there is a third library cache: /System/Library/caches

    I'll try this method. There is no other possibility for me at  the moment to remove the stuttering

  • by DavidFromFocusriteNovation,

    DavidFromFocusriteNovation DavidFromFocusriteNovation Sep 17, 2012 9:24 AM in response to FrederikY
    Level 1 (100 points)
    Sep 17, 2012 9:24 AM in response to FrederikY

    I'm afraid I don't since we only make the drivers for Focusrite products; we don't have much insight into the workings of other manufacturers sound cards.

  • by Timo,

    Timo Timo Sep 17, 2012 11:40 PM in response to tttxx
    Level 1 (110 points)
    Sep 17, 2012 11:40 PM in response to tttxx

    I also have major sound problems since ML. Especially when Mail was checking emails, I got bad crackles in all apps that run audio.

     

    It happened on three completely different macs: a MacPro (2008) in my studio with high end audio gear, a MacBookPro (2010) with CoreAudio, but also some Audio Apps, and my wife's MacBook (2009).

     

    No problems before, crackles since ML.

     

    I had a look into console and detected an error message from the sandbox that came up every time I herad the crackles. Like this one:

     

    18.09.12 08:23:12,967 sandboxd[13727]: ([13476]) Mail(13476) deny file-read-data /Library/Preferences/com.apple.mail.plist

     

    Repairing permissions did not help, the error persisted.

     

    So I just deleted the two files in the /library/preferences folder

     

    com.apple.mail.plist

    com.apple.mail.plist.lockfile

     

    and the problem was gone. At least with mail. But I still get occasional crackles from other apps. It must be something deeper in the system. Maybe with sandboxed apps, or on certain disk accesses.

     

    Feedback sent.

  • by sixfour,

    sixfour sixfour Sep 18, 2012 12:02 AM in response to Timo
    Level 1 (0 points)
    Sep 18, 2012 12:02 AM in response to Timo

    Delete all your caches.

  • by sixfour,

    sixfour sixfour Sep 18, 2012 12:03 AM in response to FrederikY
    Level 1 (0 points)
    Sep 18, 2012 12:03 AM in response to FrederikY

    I  didn't delete that, it worked for me after deleting cages in user account folder and Mac HD library folder. 

     

    No more stuttering.

  • by FrederikY,

    FrederikY FrederikY Sep 18, 2012 2:39 AM in response to sixfour
    Level 1 (0 points)
    Sep 18, 2012 2:39 AM in response to sixfour

    Did not work for me, unfortunately

  • by d0nny2600,

    d0nny2600 d0nny2600 Sep 18, 2012 2:55 AM in response to DavidFromFocusriteNovation
    Level 1 (0 points)
    Sep 18, 2012 2:55 AM in response to DavidFromFocusriteNovation

    David,

    Thank you very much for this. I appreciate you taking the time to come here and solve this for me.

    My audio issues are now gone. Thank you for that.

     

    Now to catch up on the backlog of work I had to put on hold!!

  • by dokt,

    dokt dokt Sep 18, 2012 3:50 AM in response to sixfour
    Level 1 (0 points)
    Sep 18, 2012 3:50 AM in response to sixfour

    I have reset PRA and deleted cahce, didn't solve my problem. Only SMC left to try but I have absolutely no confidence in this fixing it either. Apple should be ashamed. How many people wasted their money on moutain lion only to make their expensive computer useless.

     

    edit: I will unsubscribe to this thread now as it totally exploded.

  • by Pink Mink,

    Pink Mink Pink Mink Sep 18, 2012 4:40 AM in response to dokt
    Level 1 (0 points)
    Sep 18, 2012 4:40 AM in response to dokt

    Can we please have a representative from Apple make a post on this thread to confirm whether this MAJOR fault is being investigated please?

     

    With over 15,000 views this is clearly a topic that is causing interest /concern in the community.

     

    It is COMPLETELY UNACCEPTABLE that an upgrade provided by a company renders their product unstable without the option to uninstall it.

     

    If the continued crashing of my machine is caused by overheating brought on by Mountain Lion which subsequently causes hardware failure then I will be seeking compensation from Apple.

  • by FrederikY,

    FrederikY FrederikY Sep 18, 2012 6:52 AM in response to Pink Mink
    Level 1 (0 points)
    Sep 18, 2012 6:52 AM in response to Pink Mink

    You are completely right.

    But Apple is not reading Apple support forum (and I think none of us is an Apple representative).

    The only way to contact Apple ist the feedback form:

    http://www.apple.com/feedback/macosx.html

     

     

  • by Pink Mink,

    Pink Mink Pink Mink Sep 18, 2012 9:05 AM in response to FrederikY
    Level 1 (0 points)
    Sep 18, 2012 9:05 AM in response to FrederikY

    Yeah, already left feedback twice.  Not expecting a response, it'll just be dropped into the database and used for statistics.

     

    The really annoying thing is that Mountain Lion hasn't actually provided me with anything new that I want or need, you just assume an upgrade would improve performance generally.  It really feels like I've actually spent money to make my computer crap, when it was pretty darn perfect beforehand.

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