Backlight toggles occasionall stops working?

Discussion in 'MacBook Pro' started by dazmanuk, Jul 18, 2012.

  1. dazmanuk macrumors newbie

    Jun 25, 2012
    Hi guys.

    Weird one this.. or might not be, I just don't know / can't think of the reasons behind it.

    Occasionally, my backlight keys stop working temporarily. I've noticed it's usually after I 'brighten' the screen display.

    When it ceases to work, the backlight can either be on, or off.. whatever it's current state before i press the button. It just means that I cannot toggle brigher / dimmer.

    The icon that displays is this one:

    Anybody have any ideas?

    (PS. this seems to happen at all battery charge statuses, including via mains)
  2. dazmanuk thread starter macrumors newbie

    Jun 25, 2012

    Apologies, did a bit of further researching.

    It's to do with the abient light sensor right next to the webcam. If you hover your finger over it, it'll then allow you to light/dim the keyboard backlight.

    To disable this setting simply unckeck the 'Automatically illuminate keyboard in low light' tickbox within System Preferences -> Keyboard. This will then disable that sensor and it'll be fully manual then.


    Thanks :D

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