MacBook Pro :: Screen Brightness Keys Not Working?

Jun 27, 2012

Simple as that. Any idea how I turned this off by accident?

Pro, Mac OS X (10.7.4)

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MacBook Air :: Unable To Control Screen Brightness / Function Keys Not Working

Mar 12, 2008

I cannot control my screen brightness using the F5 and F8 keys. The only way I can adjust it is through System Preferences. I tried just F5 fn F5, Control F5, Option F5 and Command F5 and non work.

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MacBook Pro :: Brightness Keys Have Stopped Working?

Sep 12, 2009

I have a MBP with an apple wireless keyboard. The keyboard has brightness keys on it but they have recently stopped working. It is strange as the keys on the MBP still work but the ones on the bluetooth keyboard, placed exactly in the same spot (the wireless KB and the Macbook pro's KB are exactly the same), don't.

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MacBook Air :: Function Keys Not Working For Brightness Or Volume?

Mar 21, 2012

I have a 2011 (?) macbook air and ever since my trip to the genius bar for a battery issue my function keys don't work after I wake it up (just opening screen).  May also be related to last firmware update?   

I have checked the function key mapping in settings and they are normal.  The volume key launches Expose and the brightness keys (and others) don't do anything.  A reboot helps but only untill the first time I put it to sleep (close/open lid). 

MacBook Air, Mac OS X (10.7.3)

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MacBook Air :: 2011 - Brightness / Volume Keys Not Working

Aug 21, 2014

Really stumped by this. Recently (I think it was after a MacOS update but I'm not sure) my brightness and volume keys stopped working on my 2011 13" MacBook Air running MacOS 10.9.4. The F keys still work i.e. if I press Fn-F10, I get the expected effect from pressing F10, but if I just press F10, volume remains unchanged (should get muted). Mission Control, Launchpad, and media keys (rewind, play/pause, ff) all work. 

Using Karabiner, I checked to make sure the keys generate correct events. They do. Pressing the brightness keys generates 0x3 and 0x2. Pressing the volume keys generates 0x7, 0x1, and 0x0, which are the expected key codes defined in ev_keymap.h, the header file for HID. I can also adjust volume and brightness using the sliders in the appropriate section of "System Preferences." 

So volume and brightness itself can be changed. They keyboard keys themselves work and produce correct keycodes. But whatever operating system feature (HID?) that is supposed to read the keyboard input and translate it into commands to the display and sound drivers doesn't work. 

I've tried all the obvious stuff (restart, safe mode, toggle the Function key option in System Preferences->Keyboard). I've reset SMC and PRAM. Nothing has worked so far.  

The only other thing I can think of is that a while back (before this problem started occuring) I got annoyed by the power button in the top-right corner of the keyboard, which I would occasionally hit accidentally. I searched for a way to disable it, and I think I found something -- now it only does something if it's held for 2 seconds. A quick up-down strike does not do anything. Perhaps in tweaking some setting to achieve this behavior (I don't remember what I did), I screwed up something with the brightness/volume keys, but this screw up only became evident later. 

MacBook Air, OS X Mavericks (10.9.4)

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Windows On Mac :: Unable To Adjust Screen Brightness / Screen Brightness Buttons Not Working

Jun 20, 2009

So I installed Vista 64 bit on my Macbook Pro (Santa Rosa), I installed most of the drivers I can find, but I cant get the screen brightness buttons to work (F1 and F2)

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Software :: Brightness Slider And Function Keys Not Working

Apr 30, 2005

The issue is with the brightness keys and the brightness slider controls. It appears that after the 10.4 upgrade the main LCD on some PBs and iBooks stops working. In my case the attached screen lost the ability to adjust brightness, but my external 20" LCD is fine. It looks like two things have happened. The association between the keys (F1 and F2) and the code for controlling brightness somehow got disconnected and/or the "capability" of the mac to adjust the brightness of the attached LCD got lost in the upgrade. We've tried repair permissions, rebooting, new users to no avail.

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Intel Mac :: Volume And Brightness Keys Not Working With New Keyboard On It

Apr 19, 2012

I just purchased a new wired keyboard for imac and brightness and volume control keys not working . i have tried adjusting keyboard settings. I have software version 10.5.8. Do I need to upgrade software.

Info:iMac, Mac OS X (10.5.8)

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Mac Pro :: Cannot Control Th Screen Brightness With The F1 F2 Keys?

Nov 11, 2009

I am using a Samsung monitor so therefore cannot control th screen brightness with the F1 F2 keys.

I tried Shades but it messes with the colour making it look a little washed out and not good.

Are there any others I could try ?

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MacBook Pro :: Change The Brightness Keys?

Feb 26, 2012

I'm having a custom keyboard connected to my mac, but I want to change the brightness keys to my preferences. I can't seem to find them though.where I have to change it?

MacBook Pro, Mac OS X (10.7.3)

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MacBook Air :: Unable To Adjust Screen Brightness / Brightness Goes Up And Up

Nov 15, 2010

The brightness goes up when you plug in your MBA, but then over time it just goes up and up. I honestly like my brightness pretty low (rarely more than half, typically at 3-5 notches), but it just keeps on going up and up. I almost never set it above half, but multiple times a day, I notice that it looks pretty high and it's at like 3/4 so I put it it down to about 1/3, but after a while, it's just up again.

Anyone else notice this? What is it, why does it do this? How can I fix it? I don't mind not having auto-brightness (even though I loved it), as long as my screen doesn't keep going up.

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MacBook :: Brightness Changes Rejected Using Function Keys

Aug 21, 2010

When I wake my Mac up from sleep, and attempt to change the brightness using the function keys, I see the brightness "image" pop-up on the screen, but when I try to lower it, the brightness doesn't change. The boxes quickly go down, but instantly go right back up to the original brightness. Running Mac OS X 10.6.4

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Mac Pro :: Unable To Adjust Screen Brightness / Only Adjusts Brightness On Main Screen

Feb 17, 2008

I have dual ACD's. How do I make it so that both screens have the same brightness? If I adjust the brightness in the display settings it adjusts the main screen, but then not the other one. How do I make them the same?

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MacBook :: Delayed Keys Response (Volume And Brightness)

Jan 21, 2009

Whenever I press on the volume key or brightness, I have to hold it down for 3 seconds for it to change, it didn't do that before, I messed it up, can it be fixed?

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MacBook Air :: Manually Controlling Keyboard Brightness With Function Keys

Feb 4, 2008

A few minutes ago I noticed that my MBA's keyboard was not lighting up as it's supposed to. A little experimenting and I found the solution (you may kick yourself, this is so simple):
The F5 key decreases keyboard brightness.
The F6 key increases keyboard brightness.
The icons on these two keys are the clue.

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MacBook Pro :: External Display And Wired Keyboard - Brightness Keys?

Oct 18, 2009

I use my MBP hooked up to an NEC display with an Apple wired keyboard. Is there any way to have the F1/F2 keys still control the brightness on the MBP display? They currently don't do anything.

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IMac :: Increase Brightness Of Screen / Screen Brightness Is Dim

Nov 28, 2010

I have the 21" iMac and need to brighten the screen. How do I do this?

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OS X :: Gradually Increase/decrease Brightness With The Keyboard Keys?

Dec 11, 2009

I have a 15 inch aluminum macbook pro, Snow Leopard and recent updates all installed, but i noticed something on my friends 13 inch macbook pro that mine doesn't do.

On my friends, when you press the screen dim/bright button (F1, F2), its a gradual transistion, but on mine it just jumps down a notch.

For example, when you hold down the dim button on my friends MBP, it the screen dims in a similar way as to when you put your finger over the iSight camera, it fades to a dimmer screen.

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OS X :: Broken Keyboard Keys - Diagonal Keys Stopped Working?

Feb 12, 2010

I'm using the thin aluminum USB external keyboard and suddenly my 8ik, diagonal of keys stopped working (now I'm using my laptop keyboard). Anyone know if this is typically a sign of a broken keyboard, or a user issue?

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Windows On Mac :: Logitech Dinovo Keyboard's Fn Keys Do Not Adjust Volume And Brightness

Jan 28, 2010

I have recently put windows 7 professional on my aluminum macbook, installed all the drivers, and so forth. I hook up my macbook up to an external monitor, and use a logitech dinovo keyboard for a mac. However, when I am in windows 7, the function keys do not adjust volume, brightness, and any other of the functions.

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Power Mac :: Assign Brightness To Function Keys On New Apple Keyboard In 10.3.9 Using Spark V2.1.1?

Mar 19, 2012

Following on from my recent post regarding the new apple wired keyboard after very helpful feedback from people who responded to my post I decided to take the leap and purchase it!  Good news is that I am really happy with it and am glad that I got it!  Much nicer then old apple keyboard that I was using.   

I also downloaded spark v. 2.1.1 which has enabled me to change the functions of Fkeys to enable to play, pause, etc... in itunes in accordance with the keyboard layout. However, there are two functions that I am having difficulty assigning which are the F1 and F2 keys which allow the decrease and increase of screen brightness. So that I can control my screen brightness using these keys. 

G4 POWERMAC (1.25GHZ), Mac OS X (10.3.9)

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MacBook :: F3 And F8 Not Working Fine / Working As Play And Pause Keys

Oct 17, 2010

F3 and my right shift key have suddenly become play/pause keys in addition to their original functions. My F8 doesn't really do anything anymore and does not even light up in Keyboard View. I've tried to use Sizzling Keys, and reset Keyboard Shortcuts but the problem still persists. It seems to affect most music playing programs (iTunes and Vox. I have a Macbook Model 5,2 and Mac OS X 10.5.8

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MacBook Pro :: Illuminated Keyboard Not Working / Only Few Random Keys Are Working

Sep 18, 2009

I recently spilled a protein shake over my mb pro. It spilled on the right side, but I quickly cleaned it with a wet tissue and dried it up. The problem, now, is that the illuminated keyboard isn't working..only a few random keys are working and the rest aren't..

What should I do? I have a 1 year warranty left, but I'm not sure it'll be covered.

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MacBook Pro :: Screen Flickering / The Screen Brightness Dims And Then Brightens Very Quickly?

Jun 15, 2009

Has anyone noticed a very slight flicker on their new MBPs? I have a new 13" and, every so often, the screen brightness dims and then brightens very quickly (happens in less than a second).The option for auto-adjusting the screen brightness is off so it's not that particular function.It's most noticeable on all-white backgrounds both on AC and battery power. Hard drive access doesn't seem to coincide with the dimming.

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MacBook :: Screen Changes Brightness Randomly / Screen Suddenly Become Little Dimmer

Jan 19, 2009

lately, my mba has been behaving a little weirdly. its screen would suddenly become a little dimmer when the brightness in the room has not changed a bit. after a long while(15 min?), it'll turn brighter again by itself, and again without any change in the lighting of the room. the change is not big but obviously. any idea? can it be some software? or setting? or a defective light sensor?

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MacBook Pro :: Brightness Sensor Not Working Properly

Jun 14, 2010

I bought my first Mac computer last month, the 13" 2.4 variant. Loving it so far.I have lately noticed however that my ambient light sensor is not much of help. Before, after coming out of sleep I could notice the screen changing to accommodate for the room's light output. I could also put my hand over the sensor near the iSight and witness the brightness decrease in front of me.

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OS X :: F Keys Not Working On Macbook Air (rev A)?

Jun 9, 2009

I reinstalled OS X from a Leopard dvd earlier (took it to an apple store and borrowed their superdrive), then transferred my info from my black macbook (latest revision, so has the volume keys as F10,F11,F12, play at F8 etc) via time machine. Once that had finished, I logged in on the air and tried to lower the brightness. It wouldn't work, so i tried the other F keys and they don't perform their functions.

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MacBook Pro :: Keeps Changing The Screen Brightness?

Sep 15, 2007

I just got a new 15" MBP and it keeps changing the screen brightness by a couple notches either way on it's own. Anyone have/heard of this problem?

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MacBook :: Screen Too Dim Even At Full Brightness

Mar 4, 2008

My MacBook's screen is pretty dim, even at full brightness. The iPod Touch far outshines it and even a Sony PSP is brighter.

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MacBook :: Display Brightness - Screen Go Dim After Sometimes

Oct 10, 2009

Recently, after about 5 minutes of use (not sitting idle), my MacBook's screen will go very dim. I hit the buttons on the keyboard to take the brightness all the way up, but it doesn't get much brighter and there's only one thing that I can do to make the screen go brighter: I go into System Preferences and click Display. The second I click that, the brightness returns without me doing anything in the Display section, so after Display comes up, I just close it out and the screen brightness is fine for a while. It seems to do this after the lid has been closed for a while and then starts dimming again after opening the lid and using it for about 5 minutes. Is there a way to fix the auto-dim mode without disabling it? MacBook (white) is running Leopard 10.5.8 with all the latest updates.

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