Auto brightness doesn't go below a certain level

Discussion in 'MacBook Pro' started by MacMan988, Jul 12, 2013.

  1. MacMan988 macrumors 6502a

    Jul 7, 2012
    Hi, I have a late 2011 macbook pro with mountain lion installed. Auto brightness has been working well for me since I bought the mac. But today I re-installed mountain lion and now the auto brightness seems to be not going below a certain point somewhere a little below the middle in the brightness adjuster in the system preferences. But it suddenly climbs if I bring a bright light near it.

    At the moment I my room is completely dark with all the lights off but still it doesn't fall below the mid-range.

    Any ideas?
  2. Interstella5555 macrumors 603


    Jun 30, 2008
  3. MacMan988 thread starter macrumors 6502a

    Jul 7, 2012
    No, I'm not using any covers.
  4. JennyC macrumors newbie

    Jul 11, 2013
    Since you're not getting very many posts (I hope more knowledgeable people chime in!), I did what I could and tried to research your problem. These are my findings:
    Auto brightness is not working on MacBook Pro OS X Lion

    It's mentioned to try a PRAM reset, so here's how to do that
    How do I reset the PRAM of my MacBook Pro in OSX Mountain Lion?
    OS X Mountain Lion: Reset your computer’s PRAM

    Good luck!
  5. MacMan988 thread starter macrumors 6502a

    Jul 7, 2012
    Thanks for the information.

Share This Page