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 idontcarejustletmein,

    idontcarejustletmein idontcarejustletmein Aug 13, 2012 4:07 PM in response to tttxx
    Level 1 (5 points)
    Aug 13, 2012 4:07 PM in response to tttxx

    My ******* god. I never had so many problems on windows! (maybe because when I was using XP there was a 6 year gap between upgrades, but I digress)

     

    Anyway, how the **** can something like this happen? Apple controls the hardware and software. If this was a PC, fine, with half a zillion component configs, integration naturally ***** and problems are to be expected.

     

    This audio clipping out has been a reoccurring problem since I got this MacBook last year. Jesus.

     

    How hard is it to give AV applications max priority - with audio on the highest of course - on CPU time and I/O?

  • by Carlo TD,

    Carlo TD Carlo TD Aug 13, 2012 4:25 PM in response to idontcarejustletmein
    Level 3 (558 points)
    Aug 13, 2012 4:25 PM in response to idontcarejustletmein

    Tough Love! I just did a Google search for "what is the cause of cracking sound in my computer" for you, and I found millions and millions of responses (majority of them are for windows computers).  Here is one of the very first links that come up: http://www.tomshardware.com/forum/56884-6-static-cracking-noise-computer-speaker s-headphones .

  • by pepper_chico,

    pepper_chico pepper_chico Aug 13, 2012 4:45 PM in response to Carlo TD
    Level 1 (0 points)
    Aug 13, 2012 4:45 PM in response to Carlo TD

    Hey Carlo, we know google, STOP! you are acting like a troll. I have no problems with static cracking noise or speaker problems.

     

    The main problem of this thread is STUTTERING.

    Audio stuttering, System stuttering, Stuttering whatever.

     

    I looks like a OS problem, e.g., I'm just with iTunes, that's it, ITUNES.

     

    It can't play music without stutterring every few seconds for 1s~3s.

     

    BUT it can stream (by radio) music and play without stuttering.

     

    Ocasionally I get mouse stuttering, but it's not so frequent, but I wasn't experiencing this till Mountain Lion. There are several reports about different kinds of stuttering while playing games, playing ripped dvd, playing music.

     

    So please, stop, and read.

  • by Stephen Rumbelow,

    Stephen Rumbelow Stephen Rumbelow Aug 15, 2012 6:56 AM in response to tttxx
    Level 1 (92 points)
    Aug 15, 2012 6:56 AM in response to tttxx

    Hi guys,

     

    Seems like I have the same problem here too.

     

    I've been running ML since the beta stages and installed the release version the day it came out.

     

    I don't recall noticing my 2011 27" iMac getting as hot as it does since the first time I installed ML on it. Maybe it's co-incidence, but I'm quite sure it's not. The GPU diode is regularly up at high temperatures - over 70. I've used SMC fan control a few times to bring the temperatures back down.

     

    I've been playing full screen video through EyeTV a couple of times in the last week or so and the audio has begun to stutter. Pausing and un-pausing cures it for a few seconds until it resumes. When it happened today, the GPU diode was at 85C. The top of the computer too hot to hold your hand on for more than a few seconds. This is sometihng I've noticed a few times, as mentioned above, hence the use of SMC.

     

    I did have soundflower installed (although never used) so I removed that based on advice earlier in the thread.

  • by MrSomeone,

    MrSomeone MrSomeone Aug 15, 2012 5:36 PM in response to tttxx
    Level 1 (0 points)
    Aug 15, 2012 5:36 PM in response to tttxx

    2011 iMac and got some pretty serious clipping sounds in heavy 3D games like Dirt 2 and Diablo 3 (and less but still present clipping sounds on smaller games). I really hope this will be fixed in 10.8.1

  • by FrederikY,

    FrederikY FrederikY Aug 16, 2012 12:42 AM in response to tttxx
    Level 1 (0 points)
    Aug 16, 2012 12:42 AM in response to tttxx

    Same problem here! iMac 27" 2011 3,1 GHz…I hope 10.8.1 will fix this and will be released soon (Beta 12b13)!

  • by djpeeal,

    djpeeal djpeeal Aug 16, 2012 12:59 AM in response to tttxx
    Level 1 (0 points)
    Aug 16, 2012 12:59 AM in response to tttxx

    same problem here.. with new retina mbpro.. blah stutters in every program spotify, itunes etc.

     

    _coreaudio process jumps above 10% cpu time when stuttering occurs.

  • by pepper_chico,

    pepper_chico pepper_chico Aug 16, 2012 1:02 AM in response to tttxx
    Level 1 (0 points)
    Aug 16, 2012 1:02 AM in response to tttxx

    At last I have my Samsung Galaxy Note to hear music, browse the web and play games without hiccups.

  • by pepper_chico,

    pepper_chico pepper_chico Aug 17, 2012 2:57 PM in response to tttxx
    Level 1 (0 points)
    Aug 17, 2012 2:57 PM in response to tttxx

    Today I think I also have a confirmation that my macbook is getting warmer for no apparent reason. I'm just affraid this Mountain Lion will blow up sometime.

  • by Lvivske,

    Lvivske Lvivske Aug 17, 2012 3:00 PM in response to djpeeal
    Level 1 (8 points)
    Mac OS X
    Aug 17, 2012 3:00 PM in response to djpeeal

    Just an update guys, but since updating to 10.8.1 on my R-MBP, I haven't had any instances of audio stuttering

     

    I *think* my battery life has been adversely affected...but I've paid close attention to audio since taking the leap of faith and so far so good

  • by markfrommississauga,

    markfrommississauga markfrommississauga Aug 17, 2012 6:09 PM in response to Lvivske
    Level 1 (0 points)
    Windows Software
    Aug 17, 2012 6:09 PM in response to Lvivske

    I've given up on Mountain Lion for the time being, really glad I have a clone of my Lion install!  I really like the features of ML, but I never knew when the Audio hicup was going to happen!  And it really did feel like a heating issue, at least in the way the systen behaved!  like an older PC getting hit with a newer game and stuttering and chopping as things got busy!  Not the sort of behavior I expect from a 1 year old iMac with an i7 processor and a 2 GB video card!

      Also I couldn't seem to find a 10.8.1 update for my iMac, unless it was one of the iPhoto updates I encountered.

    Meanwhile it's back to lion, I can listen to a Podcast, watch Netflix.ca, even watch my EyeTV without any problems!

      I just wish I could get my money back, even if it was only $20.00!!

  • by pepper_chico,

    pepper_chico pepper_chico Aug 17, 2012 6:16 PM in response to markfrommississauga
    Level 1 (0 points)
    Aug 17, 2012 6:16 PM in response to markfrommississauga

    I just pray it's not degrading my machine... I've not made a backup and don't want to revert the whole thing....

  • by Anthonysanto,

    Anthonysanto Anthonysanto Aug 17, 2012 10:50 PM in response to tttxx
    Level 1 (0 points)
    Aug 17, 2012 10:50 PM in response to tttxx

    ...This is kind of a BIG bug.  Let's hope they get on this one in a hurry.  I'm embarassed to confront Windows users with this one...."Hi, I'm a PC"....."And I'm a M..M..M Mac."

  • by sixfour,

    sixfour sixfour Aug 18, 2012 2:08 AM in response to Lvivske
    Level 1 (0 points)
    Aug 18, 2012 2:08 AM in response to Lvivske

    So I reinstalled ML and applied the 10.8.1 delta patch, the bug is still there. Reverting back to Lion again .. lol.

  • by IBurchett,

    IBurchett IBurchett Aug 20, 2012 2:38 AM in response to tttxx
    Level 1 (0 points)
    Aug 20, 2012 2:38 AM in response to tttxx

    I've noticed my performance is actually getting worse.

    I don't knwo if the temperature is a red herring, but it's interesting that I'm sitting here in the UK in the middle of a heatwave with high humidity....

     

    I spoke to a friend with a MBP who said whilst he hasn't seen the issues we're seeing, his battery performance has plummeted with an increase in heat output...

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