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 pepper_chico,

    pepper_chico pepper_chico Dec 17, 2012 10:46 PM in response to JohnTheRipper
    Level 1 (0 points)
    Dec 17, 2012 10:46 PM in response to JohnTheRipper

    weird.

  • by JohnTheRipper,

    JohnTheRipper JohnTheRipper Dec 17, 2012 11:41 PM in response to tttxx
    Level 1 (0 points)
    Dec 17, 2012 11:41 PM in response to tttxx

    Happened again, around a hour after the first time. Failing graphics card?

     

    http://www.youtube.com/watch?v=VyfNzcrpRqY

     

    It's flickering VERY fast now, I'm not sure if you can see it very well in the video. Right before this incident, I saw some minor screen artifacts and grabbed my iPod to record. There's some black bars on the screen too, thin and widly spaced.

     

    Text from console this time, minus some useless crud generated by spotlight indexing help pages.

     

    12/18/12 1:25:51.331 AM WindowServer[85]: disable_update_likely_unbalanced: UI updates still disabled by application "Console" after 15.00 seconds (server forcibly re-enabled them after 1.00 seconds). Likely an unbalanced disableUpdate call.

    12/18/12 1:27:04.108 AM WindowServer[85]: reenable_update_for_connection: UI updates were finally reenabled by application "Console" after 87.78 seconds (server forcibly re-enabled them after 1.00 seconds)

    12/18/12 1:27:04.184 AM WindowServer[85]: CGXSetWindowBackgroundBlurRadius: Invalid window 0xffffffff

    12/18/12 1:27:04.469 AM loginwindow[40]: find_shared_window: WID -1

    12/18/12 1:27:04.469 AM loginwindow[40]: CGSGetWindowTags: Invalid window 0xffffffff

    12/18/12 1:27:04.469 AM loginwindow[40]: find_shared_window: WID -1

    12/18/12 1:27:04.469 AM loginwindow[40]: CGSSetWindowTags: Invalid window 0xffffffff

    12/18/12 1:27:05.281 AM com.apple.time[11]: Next maintenance wake [Backup Interval]: <date: 0x7fabb2604890> Tue Dec 18 02:23:36 2012 CST (approx)

    12/18/12 1:27:05.282 AM com.apple.time[11]: Requesting maintenance wake [Backup Interval]: <date: 0x7fabb2604890> Tue Dec 18 02:23:36 2012 CST (approx)

    12/18/12 1:27:05.282 AM mDNSResponder[37]: ActivateLocalProxy: No service for interface utun0

    12/18/12 1:27:06.888 AM WindowServer[85]: Created shield window 0x152 for display 0x042801c0

    12/18/12 1:27:06.888 AM WindowServer[85]: device_generate_desktop_screenshot: authw 0x7ff013435c70(2000), shield 0x7ff013435900(2001)

    12/18/12 1:27:06.000 AM kernel[0]: firefox (map: 0xffffff803bb44ed0) triggered DYLD shared region unnest for map: 0xffffff803bb44ed0, region 0x7fff90200000->0x7fff90400000. While not abnormal for debuggers, this increases system memory footprint until the target exits.

    12/18/12 1:27:06.928 AM WindowServer[85]: device_generate_lock_screen_screenshot: authw 0x7ff013435c70(2000), shield 0x7ff013435900(2001)

     

    I think I'll stay up for another hour, if it does it again I guess I need to consider rerunning the AHT.

     

    While I have encountered the kernel panics and lockups that others in this thread have seen many, many times... Today is the first time I encountered this specific issue. According to my basic knowledge of troubleshooting, I'd say the GPU or monitor is damaged, but I suppose this could be some sinister 10.8.2 issue.

  • by pepper_chico,

    pepper_chico pepper_chico Dec 17, 2012 11:44 PM in response to JohnTheRipper
    Level 1 (0 points)
    Dec 17, 2012 11:44 PM in response to JohnTheRipper

    Before my last hdd died, my system got very weird before dying. Can't say about you... I can only recommend a backup.

  • by JohnTheRipper,

    JohnTheRipper JohnTheRipper Dec 18, 2012 12:29 AM in response to pepper_chico
    Level 1 (0 points)
    Dec 18, 2012 12:29 AM in response to pepper_chico

    It's backed up to two seperate Synology NASs, I'm good in that department

  • by BarrettF77,

    BarrettF77 BarrettF77 Dec 18, 2012 2:05 PM in response to JohnTheRipper
    Level 1 (45 points)
    Dec 18, 2012 2:05 PM in response to JohnTheRipper

    Another update issued, I'd still like an invite to the beta. 

  • by A.R.D,

    A.R.D A.R.D Dec 26, 2012 3:22 AM in response to tttxx
    Level 1 (0 points)
    Dec 26, 2012 3:22 AM in response to tttxx

    Hey guys,

     

    I have been having the same problem for a long time. After multiple clean installs of Mac OSX Mountain Lion and the problem still occuring especially in connection with fast movement of windows or the use of fullscreen apps. I was wondering whether it is a hardware issue, but it was not, since it happened on multiple of my macs. It turned out it had to do with a task called "coreaudiod". Everytime it's CPU usage went way up my sound and video was stuttering. The proper solution for this problem is the following:

     

    • Deleted the Audio folder located at [OSX HDD Name]/Library/Preferences/ and create a new one as root in the terminal:
      "sudo mkdir /Library/Preferences/Audio"

     

    • then set permissions:
      "sudo chown -R _coreaudiod:admin /Library/Preferences/Audio"

     

    It worked on two of my computers and i hope it solves the problem for you guys.

     

    Alex

  • by Cosmonut,

    Cosmonut Cosmonut Dec 26, 2012 6:24 AM in response to A.R.D
    Level 1 (0 points)
    Dec 26, 2012 6:24 AM in response to A.R.D

    Thanks for the tip but this didn't fix the stuttering on my mid 2012 MacBook Pro, I hope it works for others on here.

     

    I'm relying on 10.8.3 to fix the problem -  and I hope I don't have to wait much longer to find out.

  • by lalleytech,

    lalleytech lalleytech Dec 27, 2012 11:24 PM in response to A.R.D
    Level 1 (0 points)
    Dec 27, 2012 11:24 PM in response to A.R.D

    I tried A.R.D's suggestion but I too am still having the issue. It mostly shows up when I'm playing music and the screensaver starts or if I'm playing a movie with lots of action or playing a game with lots of action, etc. Sure hope 10.8.3 has a fix!!!

  • by BarrettF77,

    BarrettF77 BarrettF77 Dec 29, 2012 12:50 PM in response to lalleytech
    Level 1 (45 points)
    Dec 29, 2012 12:50 PM in response to lalleytech

    Looks like no updates until next year.  Stock prices are sinking, products are less stable.  New devices are not innovating like they used to.  Seems like Apple is on the right track.  Also seems like I will be seeing Apple in a very different manner starting off the new year.  This will be a first

  • by chilblane,

    chilblane chilblane Dec 29, 2012 2:13 PM in response to BarrettF77
    Level 1 (5 points)
    Dec 29, 2012 2:13 PM in response to BarrettF77

    Can we keep the posts constructive, please.

  • by kallisti,

    kallisti kallisti Dec 29, 2012 2:16 PM in response to chilblane
    Level 1 (0 points)
    Dec 29, 2012 2:16 PM in response to chilblane

    Certainly

     

    I just installed Ubuntu on my MBP and it works perfectly

  • by BarrettF77,

    BarrettF77 BarrettF77 Dec 29, 2012 2:22 PM in response to kallisti
    Level 1 (45 points)
    Dec 29, 2012 2:22 PM in response to kallisti

    I'd just like a beta from these clowns.  How frustrating is 6 months with this stuff.  The store doesn't call me back, phone support is about as helpful as a brick, and I can't revert and fully eliminate the issue.  I'd love to move on Blane.  Believe me, I would.  It's just they will fix it or not and never acknowledge fault.  And my other frustration is we get censored if we talk about beta software.  Apple should be censored into submission.  But you're right, I'll drop it.  I'll let actions speak instead of words.  Hopefully they patch it soon.

  • by lalleytech,

    lalleytech lalleytech Jan 2, 2013 2:09 PM in response to lalleytech
    Level 1 (0 points)
    Jan 2, 2013 2:09 PM in response to lalleytech

    Just did a backup of my data and a completely clean install of OS X 10.8.2 on a freshly formatted boot disk and I am STILL getting this issue. In fact, it might be worse

  • by Crimguy,

    Crimguy Crimguy Jan 2, 2013 2:28 PM in response to lalleytech
    Level 1 (0 points)
    Jan 2, 2013 2:28 PM in response to lalleytech

    10.8.3 beta fixed it for me.  wait for the update.

  • by lalleytech,

    lalleytech lalleytech Jan 4, 2013 10:47 AM in response to Crimguy
    Level 1 (0 points)
    Jan 4, 2013 10:47 AM in response to Crimguy

    Well... that's swell!

    How does one get access to these betas, btw?

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