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I'm running Fedora 19 Linux on MacBook Pro and power management is critical to me. I wondering if I can turn off the backlight of the big Apple logo to save little energy with battery only. Thanks.

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You can't. It's not a software thing. This is powered by your display so if the display is up and powered on, the light will be on.

Sorry mate!

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  • It seems correct because the backlight varies when I adjust the brightness of screen. Is there any lower level configuration below OS to make it?
    – shawnzhu
    Oct 8, 2013 at 22:35
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    The thing is, the same lamp that's providing backlight is lighting the icon.
    – Daniel R Hicks
    Oct 8, 2013 at 22:36
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    @shawnzhu it doesn't actually use any more energy. It's just allowing some of the light to go out the back. There's no extra light.
    – nhinkle
    Oct 8, 2013 at 22:43
  • I found this question from Mac Forum as well. Thanks!
    – shawnzhu
    Oct 8, 2013 at 22:48
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    If you covered the logo with aluminum foil, in theory it would reflect some of the light back into the display, allowing you to run a microscopically lower backlight setting with the same display brightness.
    – Daniel R Hicks
    Oct 12, 2013 at 0:51

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