strange USB drive behavious on late 2008 MBP

Discussion in 'MacBook Pro' started by paulinbognor, Feb 7, 2009.

  1. paulinbognor macrumors member

    Joined:
    Nov 5, 2006
    Location:
    West Sussex, UK
    #1
    Odd annoying problem that I fear could me major :(

    Whenever I plug in any usb flash drives into the MBP they randomly disconnect, 10% of the time they will stay connected but most of the time they will keep connecting and disconecting, I've tried 5 different drives from different manufacturers all wth the same result.

    Oddly if I plug a portable harddrive via a usb cable into the port its fine (so seemingly not a power issue) all the drives are fine in my macbook, MacPro and imac its just the MBP.

    I've tried both ports with no difference.
    Anyone have any ideas?
     
  2. UltraNEO* macrumors 601

    UltraNEO*

    Joined:
    Jun 16, 2007
    Location:
    近畿日本
    #2
    Sounds to me like you could be suffering from a power management problem, did you try resetting the SMC?
     
  3. lordthistle macrumors 6502

    Joined:
    Feb 29, 2008
    Location:
    Italy
    #3
    During your testing, are you using a single USB port?
     
  4. paulinbognor thread starter macrumors member

    Joined:
    Nov 5, 2006
    Location:
    West Sussex, UK
    #4
    its the inconsistency thats the odd thing. After posting the thread, I had the machine shut down for a few hours, fired it up to see if there were any replies, put one of the keys in and transferred a load of files (about 5GBs worth) and its worked flawlessly for the last hour :(

    I'm now trying to work out what was different to earlier. Only things so far are:

    The MBP was plugged in to the power last time
    At various times I had a second HD plugged in (but its definetly done it with nothing else plugged in)

    hmm...has a look at the power reset and bookmarked the page. Trying to wait for it to happen again to check console to see if it shows up anything.
     

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