Weird Dock crash

Discussion in 'OS X Mountain Lion (10.8)' started by korso, Oct 23, 2012.

  1. korso, Oct 23, 2012
    Last edited: Nov 12, 2012

    korso macrumors newbie

    Apr 3, 2011

    I have one very annoying issue. After 10.8.2 upgrade I have a problem with Dock. It is very simple to describe. In the middle of the work, the wallpaper becomes gray, advanced gestures freeze at that time (keybord and trackpad scrolling work) and Dock restarts itself. This process lasts ~1.5s.
    It started to happens 20 days ago. I deleted all Dock related stuff in ~/Library. After that, maybe 10 days Dock worked as expected. Four days ago, I experienced again this crash, repeated the ~/Library clean up. But after 3 days, problem returned. Also, I checked hw with Apple HW test, reset SCM/PRAM...

    Here is a log from specific time when this happens:
    10/23/12 10:36:01.138 AM WindowServer[78]: CGXDisableUpdate: UI updates were forcibly disabled by application "Dock" for over 1.00 seconds. Server has re-enabled them.
    10/23/12 10:36:03.471 AM coreservicesd[62]: SendFlattenedData, got error #268435459 (ipc/send) invalid destination port from ::mach_msg(), sending notification kLSNotifyApplicationDeath to notificationID=132
    10/23/12 10:36:03.474 AM NotificationCenter[162]: Connection interrupted.
    10/23/12 10:36:03.487 AM[133]: ([145]) Job appears to have crashed: Segmentation fault: 11
    10/23/12 10:36:04.054 AM ReportCrash[8760]: Saved crash report for Dock[145] version 1.8 (1168.6) to /Users/korso/Library/Logs/DiagnosticReports/Dock_2012-10-23-103604_korsos-MacBook-Pro.crash
    10/23/12 10:36:23.471 AM[1]: ([187]) Exit timeout elapsed (20 seconds). Killing
    Also crash log is attached.

    Thanks in advance.

    Attached Files:

    • Dock.txt
      File size:
      38.6 KB
  2. korso thread starter macrumors newbie

    Apr 3, 2011
    Does anyone have similar problem? Or have any clue how to debug this ?
  3. dlaxar macrumors newbie

    Nov 11, 2012
    Same here

    Hi korso!

    I have exactly the same problem. Were you able to resolve this issue?

  4. korso thread starter macrumors newbie

    Apr 3, 2011
    Actually, not permanently. I have about one crash in 4-5 days.

    Here are the fix (not permanent):
    1. Boot in Safe Mode and then restart
    2. Remove from ~/Library/Application Support/Dock .db file
    3. Remove from ~/Library/Preferences file
    4. Remove from ~/Library/Preferences/ByHost file (you'll have probably some other hash string - mine is 1E2F9FA9-3D82-5D73-A1BB-DC124E2BEAD6)
    5. And at the end one normal restart

    Steps 2-4 will erase your Launchpad, Mission Control and some other dock related prefs, so you should customize these again in System Preferences.

    I read that some other people have also this problem, but can't find permanent workaround.
  5. korso thread starter macrumors newbie

    Apr 3, 2011
    But no rules, really. Today, Dock crashes twice. Very, very annoying!

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