Concerning adjusting the luminance of a display device

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42
votes
15answers
50k views

Can I change the brightness on a secondary display?

I have a MBP with a secondary display. Is is possible to have the brightness keys (F1 & F2) change both the main display (laptop screen) and the secondary display (a VGA external monitor connected ...
13
votes
5answers
16k views

Can I lower the minimum display brightness? How?

When working late, I'd like to lower the screen brightness further than the OS X allows in using the brightness keys. While you can use ⌥+⇧+F1/F21 to change the brightness in smaller ...
2
votes
2answers
4k views

Why does iPhone and iPod touch auto-brightness setting work relative to a brightness you set rather than absolute?

iPhone and iPod Touch aside, I've always considered manual brightness and auto brightness to be mutually exclusive settings. Intuitively, auto brightness means exactly that - the device figures it ...
4
votes
2answers
6k views

MBP Boot Camp Windows 8 brightness issue

I am unable to get full screen brightness on my 13" MacBook Pro when booted to Windows 8 Professional. As a result, I can't use my machine outside unless I'm booted to OS X. I checked all the power ...
11
votes
2answers
21k views

Screen brightness automatically adjusting in OS X Mavericks

I just downloaded OS X Mavericks for my MacBook Pro. I don't know if this is a unique problem, but the screen brightness is automatically adjusting on it's own. If I set it for about half the bars ...
4
votes
3answers
5k views

Why automatically adjust brightness doesn't work after I change the brightness

Why automatically adjust brightness doesn't work after I change the brightness manually using the hot keys although it's set to do so in the displays configuration?
2
votes
1answer
3k views

Auto Brightness in Mountain Lion

Ever since I've updated to Mountain Lion, the screen brightness keeps changing automatically. I don't have the setting enabled in Energy Saver. I usually have my brightness set to 100%, and the ...
2
votes
3answers
683 views

iPhone: How to prevent maximum screen brightness when charging?

I've set my screen brightness to about 50%. This works fine for me, except that the setting seems to be ignored when it's charging: then it's 100%. I've got a desktop charging stand on my bedside ...
0
votes
1answer
607 views

Screen flickers, stops after brightness change

Whenever I am using my 2006 Macbook for a while, the screen starts flickering, from one shade of brightness to another. When I change the brightness, it stops. It also occurs right after startup or ...