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I am clearly not the only one dealing with this... After upgrading to 10.10 my keyboard and mouse don't work at the login screen. However, if i plug in another mouse to a random USB port, they somehow come to life and everything works as a charm.

Does anyone know what causes this to happen? Any feedback is highly appreciated.

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  • what brand and model are your keyboard and mouse? and what brand and model is the mouse you plugged in that did work? (also are you on a laptop or PC?)
    – HTDutchy
    Oct 13, 2011 at 21:46
  • This question should instead be filed as a bug report, thanks! Instructions here. Feb 2, 2012 at 1:25

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