MBP display brightness dims to 1 on restart

Discussion in 'Mac Basics and Help' started by Peter Franks, Dec 12, 2015.

  1. Peter Franks macrumors 68000

    Joined:
    Jun 9, 2011
    Location:
    London UK
    #1
    Something that's been bugging me for a while now, but why when I switch MBP the brightness has gone down to 1 square, the first setting.

    It's no big deal but I'm curious as to why it's doing this now after nearly 5 years. 'Slightly dim display when not on power source' was unticked years ago, so not relevant to that, but even then it never went that low.

    It's typically set at the 5th square, but after restart it opens on 1.

    Anyone have any idea. I've had the MBP since early 2011, 10.6.8. SL, and it's only just started doing this in the last couple of months.
     
  2. chscag macrumors 68020

    chscag

    Joined:
    Feb 17, 2008
    Location:
    Fort Worth, Texas
    #2
    Try resetting the SMC (System Management Controller). Refer to the following Apple KB article to learn how.
     
  3. Peter Franks thread starter macrumors 68000

    Joined:
    Jun 9, 2011
    Location:
    London UK
    #3
    Thanks. Does this alter anything it shouldn't when you reset it. Doesn't go to factory for other settings does it?
     
  4. chscag macrumors 68020

    chscag

    Joined:
    Feb 17, 2008
    Location:
    Fort Worth, Texas
    #4
    No, it's perfectly safe to do the reset.
     
  5. Peter Franks thread starter macrumors 68000

    Joined:
    Jun 9, 2011
    Location:
    London UK
    #5
    thank you, they tend to make you feel nervy in that article, by saying 'only do if totally necessary' etc
     

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