Reset screen brightness to default

Discussion in 'macOS High Sierra (10.13)' started by MacMan988, Jan 14, 2018.

  1. MacMan988 macrumors 6502a

    Jul 7, 2012
    Is it possible to reset to default screen brightness after manually adjusting brightness on macOS (with auto brightness adjusting enabled)?

    After making a manual adjustment, It seems my mac's auto brightness is not working as it used to do. When I turn off lights in the room, screen brightness goes down but still too bright than it used to be. I need to get the default behavior back. Please help!
  2. h9826790 macrumors G5


    Apr 3, 2014
    Hong Kong
  3. MacMan988 thread starter macrumors 6502a

    Jul 7, 2012
    I tried resetting both SMC and NVRAM but that didn't reset auto brightness behavior.
  4. misiektoja macrumors newbie

    Apr 14, 2018
    This is one of the strange limitations I can't understand after switching from Windows. It seems it is not feasible as such. macOS has this learning behavior just like some Android phones, that even if auto brightness is enabled it will learn your behavior patterns (like more or less brightness) and it will set it next time under similar lightning conditions. The point is if you by mistake do too many adjustments it gets crazy, but of course nobody thought about an option to reset it to original settings just like on Android phones where you can reset behavior patterns with click of a button.
  5. bbnck macrumors 6502a

    Mar 19, 2009
    I'll be very surprised if the Mac does this. It makes no sense to keep the display brighter than usual if the ambient light sensor detects little visibility in the room.
  6. misiektoja macrumors newbie

    Apr 14, 2018
    It makes perfect sense as everybody is different and you can adjust it for yourself. If I prefer brighter display in dark room MacOS ambient sensor will remember it and next time will use the previously used brightness. Check it for yourself, it's very easy. But this is not the point as the feature is quite neat. The point is how to reset learned behavior patterns.
  7. GP-SE macrumors 6502

    Feb 27, 2013
    I have suffered from this issue too, I know that creating another login account will put it back at defaults for that new account. There should be a preference file somewhere that stores this info, hopefully if we find out what the file is we can edit/restore it to default.

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6 January 14, 2018