Concerning adjusting the luminance of a display device

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0
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2answers
44 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
vote
0answers
34 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
117 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
107 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
634 views

Apple Cinema Display Brightness no longer works in Mavericks

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), you will lose the ability to adjust the brightness on the ...
0
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0answers
27 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
112 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 ...
0
votes
0answers
107 views

iMAC 20-inch - Early 2008 - Brightness automatically dims, no settings to prevent this

My display automatically dims itself after a while and it's really annoying. Of course I tried to search for a solution, but I've got no options like the answers say. They mention "Energy Saver", and ...
2
votes
1answer
86 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
3k 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 ...
3
votes
1answer
1k 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 ...
0
votes
0answers
276 views

iMac OS X 10.9 screen brightness shortcuts (F14, F15) fail and just beep, Why?

OS 10.9 screen brightness shortcuts (F14, F15) fail and just beep. It seems to be related to when my iPad Apple Bluetooth keyboard is (accidentally) connected to the iMac while using the Apple wired ...
10
votes
2answers
16k 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
5answers
7k 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
309 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
379 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 ...
1
vote
0answers
2k 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, ...
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 ...
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
392 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
140 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
358 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
0answers
266 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
328 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
206 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
183 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
1answer
4k 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
68 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
2k 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
533 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 ...
3
votes
0answers
189 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 ...
12
votes
5answers
14k views

Can I lower the minium 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 ...
5
votes
7answers
43k 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
537 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
42k 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
3k 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
2k 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
2k 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
588 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
6k 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 ...
2
votes
2answers
2k views

Half of keyboard backlight dim after soda mishap

I somehow managed yesterday to spill some soda over part of my 2010 MacBook Pro's keyboard - it stayed mostly in the keyboard area, touching the F8-F12 and 8 through equals keys. I shut down the Mac, ...
0
votes
1answer
501 views

Command line brightness (Lion) [duplicate]

Possible Duplicate: How can I dim the screen from Terminal? Is there a command I can execute to modify screen brightness? Interested to see if the min/max are hardware or software ...
1
vote
3answers
6k views

Why isn't my iPhone automatically adjusting its brightness?

On my iPhone 4S (iOS 5), I've set Auto-Brightness to on (in Settings -> Brightness). I haven't, however, seen it do anything. As far as I can tell, my brightness has never changed automatically. The ...
0
votes
1answer
349 views

iMac forgets brightness

When I set my brightness on a 27'' iMac (2011) next time it boots up, it's dimmed. I switched off the ambient sensor, so this shouldn't be the problem. The connected Cinema Display remembers the ...
0
votes
1answer
586 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 ...
2
votes
2answers
1k views

MacBook brightness set to zero suddenly resets itself to one. Any ideas why?

Every night I start some music/audiobook/whatever in iTunes and then reduce the brightness of the screen to zero to listen to the audio without seeing a bright screen. For the past few weeks (I ...
40
votes
15answers
45k 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 ...
2
votes
4answers
2k 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 ...
1
vote
3answers
2k views

How to dim (and un-dim) display in automator

For those that are interested in the final script you can get it here original question I am trying to make a alarmclock script to wake me up. but I can't figure out how to change the screen ...