Applications (particularly video) freeze until window moved

Discussion in 'Mac Basics and Help' started by Makosuke, May 30, 2011.

  1. Makosuke macrumors 603

    Aug 15, 2001
    The Cool Part of CA, USA
    I've been having an oddball problem on one specific user account of my iMac (1st gen quad i7) that I'm hoping somebody else recognizes to save me isolating it the hard way. I've tried searching, but the only post at the Apple Discussions that I came up with had no replies.

    The symptoms are pretty straightforward: Some applications will hang repeatedly and routinely (generating a beachball and freezing any animation playing within), but as soon as you move the window (by dragging the title bar) or switch to another app (by clicking a background window), it immediately resumes normal operation, including registering any mouse clicks you made while it was hung.

    Additional notes:

    - Adobe applications seem particularly prone--Photoshop does this repeatedly while image editing, and any Flash video (Youtube, etc) will do it if you do any user interaction with the video (try to scrub, or even just mouseover to display the user controls). However, a video in QT Player X will also do the same thing, so it's not JUST Adobe apps. Interestingly, in QT Player 7, only the video hangs--the controls at the bottom of the window are still responsive (presumably they're being drawn by a different process).

    - It is ONLY on this one account--my wife's account, logged in simultaneously, is fine. My MBP, which has roughly the same software installed, is also ok.

    - I don't know exactly when it started, as I don't use this computer as regularly as my laptop, but it persisted through an upgrade from Flash 10.2 to 10.3, and at least a few Apple software installs.

    - It seems to temporarily go away after a reboot, but eventually comes back.

    - Happens even with no application but the one being tested open.

    - Repairing permissions doesn't help, and the disk checks out OK.

    - Activity Monitor shows nothing out of the ordinary, aside from showing the hung process as being, indeed, hung; CPU usage remains very low during hangs.

    - 10.6.7 with all updates installed, all 3rd party software up to date.

    Based on the behavior, I'm assuming it is in some way related to hardware graphics acceleration, since regular web browsing doesn't seem to have problems, or if it does they're drastically less frequent.

    The system-level things I have installed are CS5 (and its updater), SMARTReporter, the Canon wireless scanning utility, Logitech's latest LCC mouse driver, and Growl. All are also installed on my laptop, and none appear to be hanging in Activity Monitor.

    Any guesses at what it is that's causing the problem? Suggestions of things to try other than going through every process owned by my user by hand and trying to find a culprit?
  2. bwwils macrumors newbie

    Jun 11, 2011
    same problem

    Exact same issue and this is happening again on my brand new iMac!

    I did NOT transfer the old system, this is a fresh install. But something I installed must be causing this. I have no idea what it could be.
  3. Makosuke thread starter macrumors 603

    Aug 15, 2001
    The Cool Part of CA, USA
    Well, it makes me feel a little better that I'm not alone, and your experience is encouraging in that it (probably) rules out something screwed up in the OS install (mine was an upgrade which I was afraid might have been the cause, but I wasn't looking forward to a clean install).

    Perhaps we can compare notes about installed software and narrow it down. Could you create a fresh account on your system to see if you can confirm that it's only for a single user on your system as well?

    (Un)fortunately for testing, I rebooted the computer a couple of days ago, and it hasn't started happening again yet, though presumably it will.

    The most likely candidates I've got so far are CS5, Photoshop CS5 TWIAN, Canon's network scanning software, Logitech Control Center (mouse/keyboard driver), Parallels, Fusion (though I uninstalled that and it didn't seem to help). Do you have any of those installed on your problem system?
  4. mowtownphilippe macrumors newbie

    Nov 7, 2011
    Me too

    I have been having this exact problem that you describe so well. It stared on my old iMac (2008) some time after upgrading to lion with a fresh install. Two weeks ago I bought a brand new iMac. I set the new computer up using Migration Assistant with the same accounts.

    So far I have only noticed it on my own account, I'll get my wife to keep a lookout for it on hers.

    3.4GHz i7 iMac
    250Gb SSD
    2TB spinning disk
    8Gb RAM
    1Gb Graphics card

    Extra software
    Adobe CS5
    iStat Menus
    Daisy disk
    Civ V
    Launch Bar

Share This Page