Attaching Thunderbolt display crashes fast user switching

Discussion in 'OS X Mavericks (10.9)' started by Numpty, Nov 23, 2013.

  1. Numpty macrumors newbie

    Sep 16, 2003
    Western Australia
    Ok so sorted out prior issues now fast user switching causer the system to log out current user and return to log in screen. Unplug everything and it works fine. Reattach thunderbolt display and problem returns.

    Switching users by going to the login screen manually work fine. Only when trying to do fast user switch.

    Maverick, Mid 2011 Imac

    Anyone else had this issue and found a solution.??

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