Retina MacBook Pro -- on my 5th hard reset; Mountain Lion or hardware problem?

Discussion in 'OS X Mountain Lion (10.8)' started by jk73, Aug 16, 2012.

  1. jk73 macrumors 6502

    Jul 19, 2012
    I've had an rMBP since July 11 and it's been a great machine. However, over the past 10 days I've had to hard reset the machine five times. It seems to be an issue with Mountain Lion and/or the Thunderbolt-to-FireWire adapter, but I'm not positive. (I had zero problems until last Monday, when I finally got the Thunderbolt adapter, although I had only installed Mountain Lion 1-2 days before.)

    So far, two of the hard resets were required when trying to unlock the screen while the Thunderbolt adapter was plugged in, one hard reset was required when trying to unlock the screen *without* anything attached, and the latest hard reset (yesterday) was required due to a crash in Safari that froze the cursor. (I couldn't just hard-quit Safari; I had to hard reset the machine.)

    Is anyone else having or hearing about problems like this? Are there are diagnostic tests I should run? As I said, the rMBP was rock-solid from July 11 to last week, so I'm thinking/hoping it's a Mountain Lion bug rather than a hardware problem. Thanks for all feedback.
  2. Arelunde macrumors 6502a


    Jul 6, 2011
    CA Central Coast
    This sounds like a software problem - an app running in the background that's slowing your rMBP and, at times, bricking it. I've had this happen occasionally.

    A prime suspect would be Safari running in the background and bogging down everything else. Make sure you close unused tabs, otherwise, Safari is updating them all. Also, clear your browsing history periodically (History > "Clear History" at the bottom of the list) AND clear the cache.

    To clear the cache, you need to enable "Develop" in the menu bar - Preferences > Advanced > check "Show develop menu in menu bar" (at the bottom of the box) Then, go to Develop> Empty Caches.

    Hope this helps.
  3. Tankmaze macrumors 68000


    Mar 7, 2012
    You could try disk permission, to see any corrupt permissions.
  4. 50548 Guest

    Apr 17, 2005
    Currently in Switzerland
    Download Onyx and run all clean-up tasks there, and/or reset the might help.

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