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I have the system pref "Automatically illuminate the keyboard in low light" disabled. However, when I wake the computer from sleep and the login prompt appears, the keyboard backlight turns on. Despite the fact that I didn't ask for this, it's actually somewhat useful, so I don't object to that. But, once I log in, the keyboard backlight stays on. AND, to make matters worse, the machine seems to "think" that the backlight is off, because pushing the backlight dimming button (the one shared with F5) doesn't dim the keyboard backlight. Instead, I have to first increase the backlight, then decrease it, in order to disable it.

So, I'm looking for a way either to: 1. ensure that the auto-enabled keyboard backlight self-disables upon login, or 2. completely, 100%, totally disable any auto-enabling of the keyboard backlight (an acceptable alternative to 1, since I don't really need it auto-enabling at login).

Note: an unacceptable solution is one that completely disables the keyboard backlight. I need to be able to invoke it manually when desired.

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This question is an exact dupe of superuser.com/questions/396438/…. Per meta.apple.stackexchange.com/questions/34/… I'm reposting here. If a mod thinks I should remove from SU, I will flag. –  Philip Mar 24 '12 at 1:19

2 Answers 2

Lab Tick is a shareware menu item that gives you complete control over the keyboard backlight. You can set the level of illumination by hand, and electively disable automatic adjustments made by the OS.

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Cool. I'll give this a try, thanks! –  Philip Mar 24 '12 at 1:31
    
Slightly odd behavior in that it (I think it) seemed to make my keyboard flicker when I logged in from sleep, until I did the same increase-decrease backlight trick. For some reason Lion seems INTENT on turning my **** backlight on whenever I log in. :( –  Philip Mar 25 '12 at 1:00
    
Behavior repeated. Your software seems to be a good idea, but there seems to be some sort of bug or problem ("feature"?) in my install of Lion. Thanks anyway. –  Philip Mar 26 '12 at 2:44
    
Works fine here. Don't know what to tell you. –  jaberg Mar 26 '12 at 19:50
    
It was a good thought; I think I'll need to wait until someone with a similar problem finds an actual workaround / finds out how to dig deep and disallow the system itself from turning the keyboard-backlight on without direct instruction from the turn-keyboard-backlight-on button :) –  Philip Mar 27 '12 at 4:00

You can try reset SMC to fix the bug. Shut down the computer,then press option+control+shift+Power for several seconds and then boot it.

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Tried it, but no dice. Thanks though. –  Philip Apr 3 '12 at 0:25

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