Tagged Questions

1
vote
0answers
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How to control brightness on external late 2009 iMac monitor when connected to new 2012 iMac primary monitor?

I have a late 2012 27" iMac as my primary monitor also connected to a late 2009 27" iMac as a secondary monitor via a mini-display port to mini-display port cable. I also have a Dell 24" monitor ...
2
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1answer
2k views

iMac display — can't change screen brightness on bootcamp with Windows 7

I can't change iMac (2011) display brightness on bootcamp with Windows 7. When I press F1 it shows icon and even fill the bar, but nothing happen to display. What have I tried: Reinstalling support ...
4
votes
2answers
831 views

Turning off ambient light control?

I have a mid-2011 27" iMac. I have realized that the screen brightness adjusts depending on the ambient light. When the sun hides behind the clouds, and the room gets darker, the brightness decreases. ...
2
votes
1answer
1k views

How do I make my external Thunderbolt 27" display's brightness match my iMac's brightness?

I'm running my 27" iMac with a 27" Thunderbolt display, and I'm having trouble getting their brightnesses to match. It seems like checking "Automatically adjust brightness" on both causes different ...
2
votes
3answers
1k views

Is there an application for Windows7 (in bootcamp) to adjust the level of brightness of screen of iMac?

I want to darken the screen of my iMac because it is too bright for me. I use an application called shades, but it doesn't work in bootcamp. I found the software for Windows Vista called VistaShades ...