HT3924 Adjusting the brightness doesn't work

This article states "Use the keyboard of the iMac in TDM to adjust display brightness" but this does nothing. It can adjust the sound but the brightness keys don't do anything. The display stays at full brightness.
Does anyone have any ideas?

I figured it out! You can only adjust the brightness if you are logged in on the iMac. So you have to unplug the external card or MacBook, log in, then plug it back in. Then you can adjust the brightness until the screen saver comes on...

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My macbook air has no light in the display, the brightness doesn´t work and it flicks sometimes

hello Im from mexico and i bought a macbook air 1 month ago and the brightness i too low I cant see anything on the display but I connect another display device by thunderbolt and it works, sometimes the display flicks when the macbook is some 30 minutes on, I adjust the brightness but nothing, i went to the store where I bought it and the said that is the lightback that i need to send a email to the apple and send it, someone has the email where i can ask?

manolisevdalis wrote:
When my Macbook is about to die,
Are you letting the battery to be nearly totally discharged? If so, that will dramatically shorten the battery life span. Keep it attached to AC as much as possible. Here is some battery information from Apple:
http://support.apple.com/kb/ht1446
Try a SMC reset:
http://support.apple.com/kb/ht3964
Ciao

My screen had darkened and turning up the brightness doesn't work.

I had my phone in my bikini bottoms, like on the side of them, and i pulled it out and it was covered in sweat. (gross i know) but now the screen won't brighten up no matter what i do. D:

Might have got a little water in.
Try this:
1. Restore the phone via iTunes. Fixes a lot of issues
2. If that doesn't work, keep the phone somewhere warm and dry for a few days to make sure any water is out of it. Then try another restore.
Given that it's minus 9 centigrade here (= about 16 F) I'm struggling a bit with the whole concept of beachwear

My white macbook screen only works shortly when booting and when adjusting the brightness (turning it all the way down and up from there) and only stays on for seconds. any idea what to do?

Hi. I'm having quite an issue here. My macbook screen is only lid when i boot and when i adjust the brightness of the screen (going all the way down and up from there). either way it goes black again after a few seconds. External monitor works though.
Any ideas on how to solve this?
Lasse

I buy the dirty theory as well. plug and unplug a whole bunch of times - you may be able to dislodge whatever is causing the issue. Also - make sure the plug is fully seated - (some of the pad jacks are vert tight, and you really have to work them in). I gather you are out of warrenty? Blow in the hole.
last resotr - take a toothpick, dip the end in fingernail polish, get rid of the xs, then very very gently, insert the pick and try to rub the contacts. very gently as you do not want to bend them.

Win 7 Brightness doesn't work after graphics update

Hey,
I have a late-2010 MacBook Pro running Bootcamp 4.0 with Windows 7 64-bit. My graphics card is the nVidia GeForce 320m. I looked online recently and found that there was an update available for my graphics card (previously I had the one that comes with bootcamp, which is from 2009 I believe--quite outdated you see). So I installed it, hoping for better DX11 support, etc... It installed fine, but now my display is stuck on 100% brightness, when before I could adjust it with the F1 and F2 keys. When I try using the keys it shows the Apple popup with the slider moving, but the brightness doesn't change. I went into Control Panel > Power Settings and tried adjusting it from there, with no luck. The nVidia Control Panel doesn't have any satisfactory controls to do this either. It must be, of course, that the driver update changed things, but I'm not sure how to rectify the situation. I uninstalled the Apple Driver-Display from Control Panel and then re-installed from the Bootcamp files, but it didn't help. I've heard some talk about Apple Cinema Display, but I'm not sure if that's the same thing as the Display and whether I should be looking for a driver for it.
Any help would be greatly appreciated!

I've come to the same conclusion. I tried installing different versions of the driver, but they all introduced some problem or other. It seems the only way to have everything work correctly is to use the old driver they provided. Too bad, really. Especially because I tried installing the Windows 8 preview, and unless the release version has more compatibility (unlikely), it won't work on my MacBook Pro.
For my next computer I'll follow Shootist007's advice and just buy a PC. I haven't been impressed by my mac, and OS X needs a little more work IMO.
Sorry I couldn't provide more help to anyone with the same issue! It seems Apple released this computer with an outdated driver and then abandoned support for it.

Brightness doesn't work in Windows 7 on Mini 210 HD

Hi,
I've bought a Mini 210 HD a month or two ago, and i promptly removed XP to put Windows 7 Ultimate (32-bit) on it. This has worked more or less OK, but ever since upgrading i have been unable to use the brightness functions of the lap-top in any way. Not only can i not adjust the brightness with the hot keys, Windows will not dim the screen when i remove it from the mains or leave it to idle, and although i can move the brightness slider in the Power Options control panel, it has no effect. (Currently it is on the lowest setting in Windows, but the hardware is still on maximum brightness.)
I have re-installed the Intel chip-set drivers and the HP keyboard drivers a half-dozen times, these don't seem to be the problem. There is also nothing relevant listed in Windows Update, and there are no problem devices listed in Device Manager.
Is there anything i can do about this?
configuration:
HP Mini 210 HD
Windows 7 Ultimate (32-bit)
Intel GMA 3150 driver 8.14.10.1972
Microsoft x86 ACPI driver 6.1.7600.16385

Alrighty, Here ya go! I had this problem also. Got my HP mini 210HD and put Windows 7 on it right away. Brightness wouldn't change, function keys didn't work, brightness slider did nothing.
Solution:
Make sure you download the graphics drivers from HP's website, not Intel's. The brightness setting won't work with the Intel graphics drivers.
Get "Intel Mobile Graphics Driver for Microsoft Windows 7" from HP's website.
I have Windows 7 32bit, so I downloaded this: http://h10025.www1.hp.com/ewfrf/wc/softwareDownloadIndex?softwareitem=ob-78614-1&lc=en&dlc=en&cc=us&...
This should work for you Ohkine.

I don't have any sound and can't adjust the brightness Macbook Pro Mid 2009 with Windows 7 64bit

I installed Windows 7 Professional 64 bit in my Macbook Pro Mid 2009 using Bootcamp 5.1.2 and from the beginning the sound is not working and cant adjust the brightness either. Tried installing all the drivers that people recommended from Realtek, nVidia and nothing has help me fixed the problem. is there a way that i could fix those problems?

Look in the Boot Camp system requirements located here: http://support.apple.com/kb/HT5634
Find your computer model and year. I think you will find that you should be using version 4 of the Windows support software.
MacBook Pro
(13-inch, Mid 2009)
4
4
DVD
DVD
DVD
MacBook Pro
(15-inch, 2.53 GHz, Mid 2009)
4
4
DVD
DVD
DVD
MacBook Pro
(15-inch, Mid 2009)
4
4
DVD
DVD
DVD
MacBook Pro
(17-inch, Mid 2009)
4
4
DVD
DVD
DVD

How do you adjust the brightness on a Thunderbolt Display

How do you adjust the brightness of a Thunderbolt Display attached to an iMac ?

I had this peculiar ‘issue’ hooking up to my MacBook Retina when my Thunderbolt Display was delivered but Applecare - thanks Andrew - got me there. It seems daft!
The Thunderbolt Display Brightness slider IS there – you just have to know how to make it show up.
At initial set-up of the Thunderbolt Display [or if the Brightness slider is ever not visible in the System Preferences> Thunderbolt Display window], so long as the Thunderbolt [external] Display and the Macbook Display are ‘mirrored’ I can control the Thunderbolt [external] Display via my MacBook Retina Brightness keys [F1 & F2] – or by the Brightness slider that THEN appears in my System Preferences>Thunderbolt Display window. Once set up the Thunderbolt Display System Preferences Window continues to show the Brightness slider but I occasionally lose it if my MacBook has been disconnected from the Thunderbolt Display for some time – and I then have to start over.
So:-
Apple menu >
System Preferences>
Displays>
Click Arrangement [at the top]
Click Mirror Displays [at the lower left]
That then gives me-at-least a Brightness slider on the System Preferences> Thunderbolt Display window [as well as on the Built In Retina Display window] and I can then adjust them independently.
Oddly, having set this up just once the Brightness slider then remains on my Thurnderbolt Display and I can control it [and my MacBook Retina Display independently]. Occasionally I lose it again and have to start over.
Hope this works for others.

Problem in adjusting the brightness manually

Hi,
I have purchased HP Pavilion 15-n205TX with win 8.1 recently.
I have problem in adjusting the brightness of my screen. When i do it manually by pressing the keys f2 and f3, there is no change in the brightness of the sreen.
Even when i try to change it from Settings-Brightness, there is no change in the brightness
This question was solved.
View Solution.

Hi AG_8055,
Thank you for visiting the HP Support Forums and Welcome. I have read your thread on your HP Pavilion 15-n205tx Notebook and brightness not working correctly. You could try a refresh on Windows 8 stops anything that has not closed correctly. You could try a BIOS update. The HP Support Assistant will help you install the drivers and software for your machine. It will locate the correct driver update for the brightness. Here is a link download the HP Support Assistant if you need it.
Hope this helps you out.
Thanks.
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How do i adjust the brightness on my screen? it's dim like when the power cord is out.

After my wife had the laptop out of the house today, I plugged it back in and the screen brightness is very dim...like what it looks like when the power cord is not in...usually, when I plug the cord back in, the screen becomes brighter...that has stopped. Any ideas to fix?
thanks.

Hi,
Here are some common ways to adjust the brightness.
Open windows Control Panel, open Windows Mobility Centre and adjust the brightness here.
On a lot of notebooks, tapping f3 will often increase the brightness ( with f2 reducing it ).
Open windows Control Panel, open Power Options, click Change Plan Settings next to your selected power plan and you can adjust the brightness here.
Regards,
DP-K
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Microsoft MVP - Windows Experience

Can't adjust the brightness of my hp probook 450 G0 with FN+ f9 and f8

i have hp probook 450 G0 and i am finding the solution to adjust the brightness of my laptop by using F keys...i have installed all the drivers of my latop and i am using win 8.1 32-bit ..plz help..urgennt solution...before this i was using win 8.1 64 bit but this option worked...so plz help

Hi:
Make sure under the display adapters category that you see the name(s) and model number(s) of the graphics adapters listed there.
If you see a graphics device labeled Microsoft Basic Display Adapter, the applicable graphics driver was not installed.
You also need to install the Intel chipset installation utility and reboot before installing the graphics driver.
Not having the chipset and graphics drivers installed are the most likely reasons you cannot adjust the screen brighness (it is stuck on maximum).

HT4293 I have an Apple monitor model A1316 is using for Windows computer, but I could not adjust the brightness. The monitor is not bright enough when I turned off the lights in my room.

I have an Apple monitor model A1316 is using for Windows computer, but I could not adjust the brightness. The monitor is not bright enough when I turned off the lights in my room.

Have you plugged the USB cable into the computer also as the brightness is controlled over USB. If this does not work, you would need the Apple Display Driver for the version of Windows that you are using. The display driver is part of BootCamp software that you may be able to find online

How to adjust the brightness of a second display connected to iMAC 2012 by Apple Mini DisplayPort to Dual-Link DVI Adapter?

How to adjust the brightness of a second display (Dell 3007WFPHC 2560x1600 dpi) connected to 27 inch iMAC 2012 through thunderbolt port by an Apple Mini Display Port to Dual-Link DVI Adapter?

Macs control computer by USB. With a non-Apple display, you will have to use the brightness control on the display.

My ipod touch 3G the bottom doesn't work. How do i fix it?

Everything on the top works. From the bottom, its slowly moving up. now i'm not able to slide to unlock it.

If the Reset doesn't work, try a Restore. Note that it's nowhere near as quick as a Reset. It could take well over an hour! Connect via cable to the computer that you use for sync. From iTunes, select the iPad/iPod and then select the Summary tab. Follow directions for Restore and be sure to say "yes" to the backup. You will be warned that all data (apps, music, movies, etc.) will be erased but, as the Restore finishes, you will be asked if you wish the contents of the backup to be copied to the iPad/iPod. Again, say "yes."
At the end of the basic Restore, you will be asked if you wish to sync the iPad/iPod. As before, say "yes." Note that that sync selection will disappear and the Restore will end if you do not respond within a reasonable time. If that happens, only the apps that are part of the IOS will appear on your device. Corrective action is simple - choose manual "Sync" from the bottom right of iTunes.
If you're unable to do the Restore, go into Recovery Mode per the instructions here.

HT1657 I rented a movie and the sound doesn't work, how do I fix it?, who do I direct to for a complaint?

Hi, I rented warhorse HD, and the sound doesn't work, my itunes version is 10.6.1(7). How do I fix it or who do I direct to get my money back? Thank you

I'd report the problem to the iTunes Store.
Log in to the Store. Click on "Account" in your Quick Links. When you're in your Account information screen, go down to Purchase History and click "See all".
Find the item that is not playing properly. If you can't see "Report a Problem" next to the entry, click the "Report a problem" button. Now click the "Report a Problem" link next to the item.
(Not entirely sure what happens after you click that link, but fingers crossed it should be relatively straightforward.)

HT3924 Adjusting the brightness doesn't work

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