Concerning adjusting the luminance of a display device

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1answer
43 views

How to change “Automatically reduce brightness before the display goes to sleep” in Yosemite?

A few OS X releases ago, there was a checkbox in the Energy Saver settings for "Automatically reduce brightness before the display goes to sleep". This doesn't appear to be there any more, and hasn't ...
0
votes
1answer
39 views

Function keys and Enter key on built-in keyboard of 13" rMBP mysteriously remapped. How to fix or reset to default?

The built-in keyboard of my Macbook Pro started acting weird. I only started to have this problem around last week. I thought upgrading to Yosemite 10.10.3 would remove the issue but it still exists. ...
0
votes
2answers
49 views

Find out what key code brightness up/down has

I am writing a script and I need to figure out current key codes for brightness up and down. I know the standard for a MacBook is 107 and 113, though as soon as I connect a different bigger apple ...
0
votes
0answers
41 views

rMBP different brightness settings on battery and plugged in

Is it somehow possible to manually control the dimming in OS X Yosemite (10.10.2) like Windows 7 power plans? I would like to have one brightness setting, when on battery (30% brightness) and another, ...
1
vote
0answers
93 views

Auto Adjust Brightness Secondary External Non-Apple Monitor

I have recently purchased a Dell S2340l monitor to extend my MBPr late 2013 screen. So far I can say it's a great monitor, colors are great, but still in the test phase... Whatsoever, I really love ...
0
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0answers
83 views

Macbook Pro, F2 key is not working

I have Macbook Pro (late 2011). Just found that F2 key (increase brightness) is not working while F1 (decrease brightness) works well. Though I can adjust brightness in Preference > Display ...
0
votes
3answers
493 views

Boot Camp partition is on lowest brightness and will not change

It all started this morning, since I listen to podcasts on YouTube before bed. I barely use my Mac partition, but still update it. I use my Windows partition for most of my stuff. I went to bed with ...
1
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0answers
160 views

External Display Brightness, Contrast and Color are Terrible

I have a late 2014 13" Retina MBP. It's connected to a 24" Philips 246EL Display by using an Apple Mini DV to DVI adaptor. The brightness and contrast on the external display are terrible, and no ...
0
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1answer
100 views

Can someone explain how to find and use kext files?

The post I found on this forum: "Apple Cinema Display Brightness no longer works in Mavericks or Yosemite" explains how to fix it using kext files but I can't figure out how to get the kext file to ...
1
vote
1answer
1k views

Screen brightness control (F1, F2) not working on a WASD mechanical keyboard with mac mode keys

I got a WASD mechanical keyboard with mac mode keys which has the all the media shortcuts such as play, pause, volume up/down etc except for screen brightness control. Even though in System ...
1
vote
1answer
63 views

Menu command name for adjusting brightness

I'm trying to change the Increase brightness key from F1 to F7. In order to do that, I went to System Preferences and tried to make a custom shortcut, but I realized that I didn't know the menu ...
0
votes
2answers
705 views

How to set brightnes for multiple thunderbolt displays at the same time using keys on apple keyboard

Is there a way to set the brightness for all displays (thunderbolt displays) connected to a mac using thunderbolt syncroniously. If I chnage the brightness using F1/F2 on my Mac Wireless Keyboard. ...
1
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0answers
103 views

Automatically adjust brightness on second monitor

I am using a Late 2013 21.5" iMac with a 22" Samsung TV as a second monitor. My iMac automatically changes its brightness throughout the day. Is there any way I can get my Samsung TV to automatically ...
0
votes
1answer
395 views

Why does the brightness still automatically adjust after turning it off (Mavericks)

I turned off automatic brightness adjusting in the display preference pane (as explained here). The brightness still adjusts automatically. If I have the preference pane open I can even watch the ...
1
vote
1answer
226 views

Trouble with Macbook display — brightness cuts out or gets wavy if I move the screen around

Macbook Pro, 2008, 15 inch Running Mavericks 10.9.2 If I move the screen around at all while it's running the brightness will almost always reset to as if it was zero or it gets these wavy ...
1
vote
4answers
4k views

Apple Cinema Display Brightness no longer works in Mavericks or Yosemite

So when you have a ~5-7 year old Apple Cinema Display monitor that looks something like this: and you upgrade to Mavericks (MacOS 10.9) or Yosemite (MacOS 10.10), you will lose the ability to ...
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0answers
44 views

Mac brightness adjustment menu is always up?

The brightness menu popped up and doesnt disappear. The key that is responsible for bringing it up is F2! what can I do to make it turn off?
0
votes
1answer
191 views

Late 2008 Macbook Pro Brightness Issues

Recently my Macbook Pro's screen started looking dimmer than usual, and has a slight flicker. When I press the Brightness up and down keys, I see the visual feedback on the screen that would suggest ...
2
votes
1answer
103 views

Can I change which external monitor is considered the “secondary” monitor?

I've got a MacBook Pro, and two Thunderbolt displays. I'd like to be able to change the brightness on them individually, like so: For the MacBook, I'd use the F1/F2 keys on its keyboard. For the ...
6
votes
4answers
6k views

OS X Mavericks Screen brightness auto adjusting even when option is disabled

Now I know from trying to find an answer to this to go uncheck the auto adjust box, since apparently it got checked when I updated to Mavericks, but now it seems my MacBook Pro has a mind of its own ...
4
votes
1answer
2k views

Can you control brightness on two monitors simultaneously via the brightness key?

I have two Thunderbolt monitors daisy chained together and when I press down on the brightness key (F1/F2) it only dims the brightness / ups it only on one monitor. Is there a way so that when the ...
16
votes
2answers
37k 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 ...
5
votes
6answers
16k views

How can I increase brightness on Mac without Mac keyboard

I’m using a MacBook Pro and I broke it a while back. So, the keyboard doesn’t work on the laptop. I hooked up a keyboard to the USB port so I can still use it. I’m using a Dell keyboard. Last night I ...
1
vote
0answers
447 views

MacBook Air Backlit Keys Not Adjusting

I have the Adjust keyboard brightness in low light option selected but this just isn't working correctly. The screen brightness adjust automatically (i.e. I put my thumb over the webcam and the ...
0
votes
1answer
485 views

Screen brightness on Macbook Air June 2012 running Windows 7 Pro x64

Adjusting the screen brightness on my Macbook Air (June 2012) isn't working in Windows 7 Pro x64. I saw some comments online saying there's a regedit I can do to enable brightness, but that didn't ...
2
votes
3answers
3k views

MacBook backlight turns off when brightness is set at 100%

I was using my MacBook today when suddenly the backlight turned off, right while I was in the middle of using it. I know it was the backlight because: I have an external display, which remained on, ...
5
votes
2answers
8k 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 ...
0
votes
2answers
1k views

I want to disable automatic brightness adjusting, but where is the setting?

I'm basically trying trying to find this setting: From this question, but can't find it on this Snow Leopard MacBook. My version of that settings window has the slider, plus a list of resolutions, ...
0
votes
1answer
635 views

Dim screen beyond lowest brightness from terminal [duplicate]

Anyone know of a way to dim a mac's screen beyond the lowest brightness setting through the terminal?
0
votes
0answers
155 views

Mac Mini with mountain Lion sets brightness to max

My Mac mini is automatically putting my monitor brightness to 100%. Inside my display settings, there is no option to set brigthness to the monitor, and I set it directly on Monitor. Any clue how to ...
3
votes
1answer
556 views

I Can't raise the brightness to the maximum.

I have a macbook pro late 2008. When Im raising the brighntess level, when it reaches the 50% it starts to decrease the brightness till it goes almost dark on 100%. Someone know how to do fix this? ...
1
vote
1answer
344 views

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
votes
0answers
384 views

Brightness on bootcamp is totally off

So i have a MBP retina 15" that has a Windows 7 Bootcamp partition. The other day I noticed my screen was a little dirty so I took the screen brightness all the way down (fn+ f1) and did this while ...
1
vote
1answer
231 views

F.lux does not always work on resolution changes. Is there a way to check if the resolution changes?

I'm a happy user of f.lux, but sometimes when I plug in my external monitor on my macbook air it returns to full brightness. This also sometimes happens if I unplug my external monitor and switch to ...
0
votes
1answer
186 views

iPhone auto brightness

I reset the settings (all settings) on my new iPhone 5 today, to try to troubleshoot some problem. Since doing so, my screen seems dimmer. I never changed the brightness settings to begin with, from ...
3
votes
2answers
5k 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 ...
1
vote
0answers
72 views

Change duration between ambient screen-brightness change

When the ambient light changes around my workspace, my MacBook Pro laptop responds appropriately. However, I find that when the screen brightens or dims, it is too quick. Is there a way to increase ...
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
2answers
3k views

Display brightness issue on MacBook Pro

I'm using a 2011 13" MacBook Pro. For the past few days the brightness always resets to full on boot up and just when the spinning wheel stops loading (before desktop loads), it dims automatically to ...
2
votes
1answer
561 views

Can I configure the relative brightness level that auto-adjust will set?

I enjoy the Mac OS X brightness auto-adjustment on my MacBook Air, but I would usually prefer the screen dimmer than the level it decides on. This would also conserve some charge. I don’t suppose ...
4
votes
0answers
221 views

Screen brightness decreases when I middle-click

I have a logitech wireless mouse hooked up to a macbook pro running 10.7. Whenever I middle-click the mouse button, the laptop's display brightness decreases. It behaves just as if I had pressed the ...
19
votes
6answers
26k 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 ...
7
votes
9answers
65k views

How to dim non-jailbroken iPhone below dimmest factory setting?

At night, in the dark, even at its dimmest setting, my iPhone 4S is still bright enough to annoy my wife. I've searched all over for an app or setting tweak that would let me go "dimmer than dim". ...
5
votes
1answer
728 views

Does using a brightness reducing app save battery?

I installed the app Brightness Slider on my MacBook because the lowest brightness setting in the System Prefs isn't low enough at times. When I choose a brightness setting below what the System Prefs ...
7
votes
7answers
56k views

Ability to set even below the minimum brightness on iPad

In the night the lowest brightness setting on iPad (1st gen) is still too bright. Is it possible to set it even lower somehow? On iBooks it's possible but it works only on iBooks itself and not on ...
1
vote
1answer
4k views

MacBook pro (Early 2011) display backlight won't turn on automatically after waking up from sleep

My 15" Macbook Pro (Early 2011) has always had a problem where when I open the lid to wake it from sleeping the backlight doesn't turn on. I can easily turn it on by changing the brightness, which ...
4
votes
2answers
3k 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
3k 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 ...
3
votes
1answer
621 views

Why does my MacBook's monitor go to maximum brightness when waking up from sleep?

I have my MacBook connected to an external monitor (via HDMI), and the brightness of MacBook monitor is set to 50% of max brightness . I usually put my display to sleep when I leave my computer for a ...
2
votes
3answers
7k views

Where are System Preferences settings stored? Trying to script equal brightness settings for two monitors

I was wondering if anyone know where the System Preferences settings are stored on Mac OS X Lion? I presume there's some .plist with them somewhere. I think that they might be stored in multiple ...