strange USB drive behavious on late 2008 MBP

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

  1. paulinbognor macrumors member

    Nov 5, 2006
    West Sussex, UK
    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


    Jun 16, 2007
    Sounds to me like you could be suffering from a power management problem, did you try resetting the SMC?
  3. lordthistle macrumors 6502

    Feb 29, 2008
    During your testing, are you using a single USB port?
  4. paulinbognor thread starter macrumors member

    Nov 5, 2006
    West Sussex, UK
    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.

Share This Page