Why is video playback continually stuttering after the Mountain Lion 10.8.2 update?

Since updating to Mountain Lion 10.8.2 video playback in iTunes and QuickTime is unwatchable. The video stutters constantly then plays catch up to the sound. I'm running a 2011 Mac Mini i5 2.3 GHz and 8 Gb of RAM. Anyone know how to roll back the update to a working version of Mountain Lion?

Hello, you'd have to reinstall 10.8.0 or 10.8.1, but...
See if the Disk is issuing any S.M.A.R.T errors in Disk Utility...
http://support.apple.com/kb/PH7029
Open Activity Monitor in Applications>Utilities, select All Processes & sort on CPU%, any indications there?
How much RAM & free space do you have also, click on the Memory & Disk Usage Tabs.
Open Console in Utilities & see if there are any clues or repeating messages when this happens.
In the Memory tab of Activity Monitor, are there a lot of Pageouts?
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
Reboot, test again.
If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or some USB or Firewire device, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.
Check the System Preferences>Other Row, for 3rd party Pref Panes.
Also look in these if they exist, some are invisible...
/private/var/run/StartupItems
/Library/StartupItems
/System/Library/StartupItems
/System/Library/LaunchDaemons
/Library/LaunchDaemons

Similar Messages

  • Cd/dvd rom fail after the mountain lion installation

    Recently, I installed os (the mountain lion) on my 2009 mac mini. Data CDs and DVDs are available to see but not working(internal super drive). also every audio cd is not recognized at all. I tried to downgrade os to lion but it does not work too. Therefore, I re-installed ML and wait for Apple's updates.
    Some update patches I downloaded a month ago was working good but it became dead again after installing other updates. 
    I hope Apple staffs would take care of this issue because many customers have purchased mac for its safety, innovation and faithful care. 

    No.
    You just need to show the update again.
    Go to your account and "Show hidden purchases" or something like that.
    You can't delete it.

  • Why is my Macbook Pro very sluggish after the Mountain Lion update?

    It's quite frustrating being as this is my first Apple laptop. I figured that it would be easy to update these things.
    I was using the prior OS and it worked just fine. Now my Macbook is just as slow as the HP laptop that I had to retire.
    I'm using OS X Version 10.8.1
    Processor: 2.3 GHz Intel Core i5
    Memory: 4 GB 1333 MHz DDR3

    With only 4GB of RAM, how much do you have devoted to the virtual machine running under Parallels? Even if it's a small amount, it's going to make page outs and swaps used very high. From my perspective, 8GB of RAM is the 'sweet spot' for running Mountain Lion.
    I'm assuming that you've a 15" mid-2010 MacBook Pro? If so, you can speed things up by installing the maximum 8GB of RAM. Go RAM shopping at Crucial or OWC.
    Other than upgrading your RAM, the only thing that you can do to speed up your machine is to install a SSD. You can also check the SSDs at Crucial and OWC and decide if one is right for you.
    Clinton

  • How do you update to the new Java 10.7 after the Mountain Lion upgrade?

    I recently downloaded the OS X Mountain Lion, I need the Java version 10.7 for gaming purposes. When i go to Java preferences the latest version is Java SE 6, so I tried to do a "software update" but there is no update available.

    While we all have MacBooks in this forum most of us don’t run Mountain Lion. There's a Mountain Lion Support Community where everybody has Mountain Lion. You should also post this question there to increase your chances of getting an answer. https://discussions.apple.com/community/mac_os/os_x_mountain_lion

  • Where to find OS X Lion after the Mountain Lion release?

    I have an old MacBook Pro at work, and it's compatible with Mountain Lion. Currently it's running Snow Leopard, but I'd like to upgrade to Lion. Where can I find the download? Since Mountain Lion was released, Lion disapeared from the App store...

    If you need to purchase Lion call 1-800-692-7753 or 1-800-676-2775. Ask for a Sales Representative. They will check your Apple ID, and email you a code and instructions.  The cost is $29.99 (as it was before) plus tax.  It's a download.
    Lion System Requirements
    Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor
    2GB of memory
    OS X v10.6.6 or later (v10.6.8 recommended)
    7GB of available space
    Some features require an Apple ID; terms apply.

  • After the Mountain Lion 10.8.2 upgrade my system is VERY slow, online connection down miserably. WHat has happened and how do I go back to 10.8.1?

    Upgraded my Macbook Pro tonight to 10.8.2....horrible move, internet connection is now a slow crawl. Was very fast before upgrade. IF no known fix how do I go back to 10.8.1?

    I had the same problem.  My solution was to reset the SMC on my 2010 Macbook Pro and now my internet speed is back to normal.
    To reset the SMC, shut down the computer completely.  Then hold SHIFT+CONTROL+OPTION on the left hand side of the keyboard AND the Power key for at least 2 seconds.  Release all the keys, then repower the laptop normally using the power key. 
    Hope this helps.

  • Why MLB.TV is not appearing after the last update?

    why MLB.TV is not appearing after the last update?

    Make sure the store is set to the US.. Also restart the ATV.

  • I'm downloading using RealPlayer But the video playback is jerky.  The audio playback is OK.   Can anyone suggest a solution.  Would upgrading to RealPlayer Plus be a good thing to do?

    I'm downloading using RealPlayer But the video playback is jerky.  The audio playback is OK.  
    Please can anyone suggest a solution. 
    PS Would upgrading to RealPlayer Plus help?

    I can't understand how internet speeds can be the cause of the problem.  My problem with a jerky playback is that I have already down loaded.   Could this be to do with my computer (I maybe able to persuade my wife that I need a new one).  Earlier I was listening to a clip of the MJQ, downloaded from UTube, and although the sound was good the picture was not.
    My computer is an iMac with an Intel Core 2 Duo with a processing speed of 2.8 Ghz.  Does this information help?

  • Why does itunes crash upon opening after the software update?

    Why does itunes crash upon opening after the software update? Everything worked fine until I decided to update this morning and as soon as the computer rebooted, the error message appeared.  Is there anything available to fix this?

    I answered the same question in a similar post.  It's all to do with the wireless sync. 
    I used the following method to stop iTunes from constantly restarting -
    Open task manager
    Select the 'Processes' tab.
    Look for 'iTunesHelper.exe'
    Select 'iTunesHelper.exe'  then click on 'end process'
    Hope this helps.

  • HT5278 my iphone 4s will not charge or be recognized when plugged into the computer after the ios 5.1.1 software update why is this?

    my iphone 4s will not charge or be recognized when plugged into the computer after the ios 5.1.1 software update why is this? i have used many usb cords also.

    Had same problem and did the normal reset 10seconds but did not work.
    I plugged in USB and held the on/off switch and home button for 20seconds and the "Connect to Itunes" came on the screen. I then opened up Itunes and it directed me to restore.

  • IWeb doesn't sit in the dock after installing Mountain Lion? Why is that?

    iWeb doesn't sit in the dock after installing Mountain Lion? Why is that?

    Assuming you updated the OS on a Mac that has iWeb installed you will find iWeb in the applications folder. See this page for how to open your website when using Mountain Lion...
    http://www.iwebformusicians.com/iWeb/mountain-lion.html

  • Why bookmarks have 4 spaces added after the update from FF3.6 to 13?

    Why bookmarks have 4 spaces added after the update from FF3.6 to 13?

    Problems with bookmarks and history not working properly can be caused by a corrupted places.sqlite database file.
    *http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox
    *https://support.mozilla.org/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file
    You can also try to repair the places database with this extension:
    *https://addons.mozilla.org/firefox/addon/places-maintenance/

  • Why ilife disappear after reinstalling mountain lion?

    why ilife disappear after reinstalling mountain lion?

    The 10.8.3 update should have left your iLife apps intact - did you do a clean install, erasing your drive? If so, then you should be able to go to the Mac App Store and download the iLife apps using the Apple ID with which you registered your computer.
    Clinton

  • After installing Mountain Lion, why is there Yahoo access for one user but not another?--both are administrators.

    After installing Mountain Lion, why is there Yahoo access for one user but not another?--both are administrators.

    We've had several instances where we have had to run chkdsk on arrays with over 1m files. Average completion time is approximately 72 hours. The maximum downtime window they have available is the 64 hour weekend window. File sizes and number of files were
    much smaller then than they are now.
    The idea, in theory, was to use VHDs to compartmentalize the data into smaller volumes which could be more easily managed. It would also improve performance when transferring these compartments of data as they would use sequential read/write rather than
    fragmented/random. This idea was never fleshed out in entirety, they don't split data up into little containers, but simply into big ones per project. Hence the 11m files in one container that I am currently trying to diagnose.
    Some other important facts: The VHD in question is mounted in B:/project/ as this server also allows remote workers to log in, but they are restricted to see only data in E:. Disks A-D are hidden via group policy.
    Update: icacls is failing on a large number of files within this dataset. I counted the path characters to ensure it wasn't the 255 character limit I was encountering and verified that the paths being blocked are only about 150 characters long. Once it finishes,
    I'll have to try taking ownership and then re-running it. At this point I still have no idea how long to expect. I'm running out of time as the environment will be in use again at 9AM tomorrow morning.

  • Why won't iTunes 10.6.3 work after installing Mountain Lion?

    Why won't iTunes 10.6.3 work after installing Mountain Lion?

    Instead of downloading from Apple updates on my computer, I went to apple.com, loaded it from there and the update worked fine. 

Maybe you are looking for