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 FrederikY,

    FrederikY FrederikY Sep 20, 2012 7:43 AM in response to Victor In Munich
    Level 1 (0 points)
    Sep 20, 2012 7:43 AM in response to Victor In Munich

    So the only thing we can do is waiting (and I hate waiting…).

    I contacted Apple Developer Support, maybe they can help us…

  • by BarrettF77,

    BarrettF77 BarrettF77 Sep 20, 2012 8:02 AM in response to FrederikY
    Level 1 (45 points)
    Sep 20, 2012 8:02 AM in response to FrederikY

    Keep us appraised.  I've talked to Level 2 tech support over 6 times since release, and other departments.  So far, nothing yet other than to have the computer taken to the genius bar.  Which I'm not doing because it's doing it on both of my computers and started immediately at the same time and it doesn't do it under Snow Leopard.  But I can't use SL because certain apps won't work. 

     

    This is definitely Apple trying to compete with Windows Vista for worst OS in a while.  So far, they have a good shot by me. 

     

    Things I've noticed trigger the audio stutter, video stutter, and cursor jumping on my USB mouse are screen saver activation/deactivation, email coming in, opening applications, and any other sudden change in system activity.  It doesn't have to be a heavy load or process either. Usually it's pretty medial tasks that initiate it. 

     

    Also, I do have a Thunderbolt display attached to my iMac, which I doubt would have any influence.  But I throw it out there to see if others might also have an external display that might be influencing this behavior.  Again, very doubtful though. 

  • by pepper_chico,

    pepper_chico pepper_chico Sep 20, 2012 9:32 AM in response to tttxx
    Level 1 (0 points)
    Sep 20, 2012 9:32 AM in response to tttxx

    This SНІT will be gone in the next OS X release, probably, and we, apple foolboys, will be asked for yet another 20 bucks to get it right.

  • by Merls1003,

    Merls1003 Merls1003 Sep 20, 2012 11:20 AM in response to tttxx
    Level 1 (0 points)
    Sep 20, 2012 11:20 AM in response to tttxx

    I emailed Mr Cook himself on Wednesday and low and behold i got a nice lady on my phone today explaining that she has been asked to contact me and arrange a member from the senior technical support team call me regarding the Mountain Lion problem with iMacs.

     

     

    So with that i would like to let everyone know that apple are on the case and Mr Tim Cook does read his emails.

     

     

     

    Thank You apple!

  • by pepper_chico,

    pepper_chico pepper_chico Sep 20, 2012 11:46 AM in response to Merls1003
    Level 1 (0 points)
    Sep 20, 2012 11:46 AM in response to Merls1003

    I think you mean problem with Mountain Lion. I have a macbook and suffer from the same thing. It's interesting to point out that there're numerous reports outside this forum by gamers, just after installing Mountain Lion, like this (http://us.battle.net/d3/en/forum/topic/6246865770) and others already mentioned.

  • by Merls1003,

    Merls1003 Merls1003 Sep 20, 2012 12:31 PM in response to pepper_chico
    Level 1 (0 points)
    Sep 20, 2012 12:31 PM in response to pepper_chico

    http://www.youtube.com/watch?v=0vqDQfgOTTk

  • by BarrettF77,

    BarrettF77 BarrettF77 Sep 20, 2012 1:02 PM in response to Merls1003
    Level 1 (45 points)
    Sep 20, 2012 1:02 PM in response to Merls1003

    Not to burst your bubble, but I also contacted executive relations about a month ago. When I spoke to them they set up a technician to contact me by phone which led me to three more technicians contacting over the curse of two weeks and were unable to do anything. They had me make modifications to the operating system, run a DMG file for an image capture, and a few other changes which ultimately led to the operating system becoming completely unstable forcing everything to have to be wiped on the computer and a fresh install performed.

     

    After this yielded no results, the Apple executive relations person told me that I need to take both of my 27 inch iMacs to Apple so that the Genius Bar could run more tests and diagnostic on the computers.  Despite my referencing this Apple discussion post, the fact that the problem did not exhibit itself undersell Leopard, or under Boot Camp Windows, and that the issue was clearly related to  only Mountain lion, They were of no further help.

     

    Hopefully will get further than I do, and if you get please post back with what you find if anything results in a fix. Best of luck. 

  • by Merls1003,

    Merls1003 Merls1003 Sep 20, 2012 1:09 PM in response to BarrettF77
    Level 1 (0 points)
    Sep 20, 2012 1:09 PM in response to BarrettF77

    Thanks for the heads up and of course if any progress is made i will update the thread.

  • by Ignolopi,

    Ignolopi Ignolopi Sep 20, 2012 2:01 PM in response to tttxx
    Level 1 (16 points)
    Sep 20, 2012 2:01 PM in response to tttxx

    I updated to 10.8.2, sadly still having troubles with fast-forwarding followed by stuttering audio. But I wanted to share a temporary fix.

     

    Close the file and reopen, and that works. But that loses my spot so that was getting annoying. I found out I could go to Trim mode (command-T) and back out, and the audio would fix itself. (And not lose my spot.) (< On an individual basis. It usually breaks again sometime the next video.)

     

    Don't know if this will work for anyone else but it's worth a shot

     

    (I'm on a 2012 MacBook Pro 15")

  • by BarrettF77,

    BarrettF77 BarrettF77 Sep 20, 2012 3:10 PM in response to Ignolopi
    Level 1 (45 points)
    Sep 20, 2012 3:10 PM in response to Ignolopi

    No luck here unfortunately.  I fired up a game on my computer from a cold start where the computer hadn't even had a chance to warm up in a room that is 68 degrees.  Temperature didn't seem to make any kind of a difference.  So i'll throw the heat related issue out. 

  • by Pink Mink,

    Pink Mink Pink Mink Sep 20, 2012 3:30 PM in response to BarrettF77
    Level 1 (0 points)
    Sep 20, 2012 3:30 PM in response to BarrettF77

    Have given up even attempting to listen to music via my iMac. Just more concerned about the overall system performance - three freezes tonight, the computer did not auto reboot but did freeze for around 30 seconds on each occasion.

     

    Will be contacting Apple tomorrow, requesting a refund and details on how I can reinstall Lion and get this current cr*p operating system off my computer. Feeling pretty disgusted at the moment, completely unacceptable that an Apple product doesn't function on a £2,200 Apple computer.

  • by Ignolopi,

    Ignolopi Ignolopi Sep 20, 2012 3:35 PM in response to Ignolopi
    Level 1 (16 points)
    Sep 20, 2012 3:35 PM in response to Ignolopi

    (Whoops - I didn't specify, this was for Quicktime Player. I haven't had problems in other applications.)

  • by Anthonysanto,

    Anthonysanto Anthonysanto Sep 20, 2012 10:39 PM in response to BarrettF77
    Level 1 (0 points)
    Sep 20, 2012 10:39 PM in response to BarrettF77

    Show them this...

     

    http://www.youtube.com/watch?v=6Sm9fkx-hTk&feature=g-upl

  • by Nemacyst,

    Nemacyst Nemacyst Sep 20, 2012 11:05 PM in response to tttxx
    Level 1 (0 points)
    Sep 20, 2012 11:05 PM in response to tttxx

    Just did the 10.8.2 update......of course same problems.  Audio stuttering / crackling / then cuts out completely along with mouse pointer jumping and graphical stuttering.  Exit whatever program I am using and wait about 30 secs and problem clears.  Only to heppen again, when utilizing program again.  Also, does not matter what I am doing (youtube, itunes, WoW, D3, StarCraft)......here are my specs and I too submitted feedback.

     

    Mid 2011 27" iMac

    Processor  3.1 GHz Intel Core i5

    Memory  4 GB 1333 MHz DDR3 (Apple installed, never been upgraded)

    Graphics  AMD Radeon HD 6970M 1024 MB

    Software  OS X 10.8.2 (12C54)

  • by Miysis,

    Miysis Miysis Sep 21, 2012 5:51 AM in response to Nemacyst
    Level 1 (0 points)
    Sep 21, 2012 5:51 AM in response to Nemacyst

    +1

     

    Apple, FIX THIS!

     

    Also used the feedback form under http://www.apple.com/feedback/macosx.html

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