10.5.6 disabled screen brightness control...

This update has caused my screen brightness to be uncontrollable from the keyboard (F1 and F2). I am forced to change brightness from the capacitive buttons on the screen itself. In addition, the visual slider does not appear like it used to.

I have a new MBP (late 2008) and 10.5.6. I do not have the problem you describe on my MBP display.
Does your problem only occur with the external display?
charlie

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Windows 8.1 kills screen brightness control

I have a touch smart 23 computer that came with windows 8.0. An auto upgrade to 8.1 caused the screen brightness control to stop working and the screen stays on super bright. I could not get a response on how to fix so I had to re-install 8.0 which fixed the problem. I set the system to not upgrade without my approval and yet it did it again last week (about 4 or 5 months later). When I have to reinstall 8.0, I have to re-install several primary programs as there are no restore points left except back to factory settings. Question one is - has there been a fix installed on windows 8.1 that will again let me control the brightness on my screen? If not, question 2 is how did the update override my setting to not allow updates to install without my approval. I have a full day of re-installs that I don't want to have to do a third time.

Hi:
You probably have to install the W8.1 graphics driver for your specific model.
Normally when you can't control the screen brightness, that means the graphics driver isn't installed.
As for your second question, that I do not know.

My screen brightness control buttons don't work windows 8

my screen brightness control buttons don't work?
the light in the mute button is always on when NOT on mute?
Have set up Win8 3 TIMES but get always same bug agan
Hope someone can help

Hello smarisig. I understand you are not able to control screen brightness from the keyboard on Windows 8. By chance, did you upgrade to Windows 8 from Windows 7? I have located an online forum that contains troubleshooting on this issue: http://thedailybuggle.com/forum/unable-control-screen-brightness-windows-8-a-200.html
The person who posted the issue on this forum had upgraded from Windows 7 to Windows 8, and then this issue occurred. That is the reason I asked if this Windows 8 was upgraded. Regardless, follow the troubleshooting presented and it could resolve the issue for you. If not, let me know and I will continue to research the issue in the meantime. I'm only here to help!
Mario
I worked on behalf of HP.

Simulating a screen brightness control

I am trying to simulate a screen brightness control on a training tool for locomotive driver console. This console has 8 function buttons, which are used to navigate to various screens depending on the scrren currently displayed. There is another button that is used to control the brightness of the display and I want to simulate this by pressing the button and displaying a semi transparent rectangle over the screen. I can do it for a single screen using the advanced actions but I don't know how to have this work on all screens without repeating the process for every slide. I tried to put this feature in the Master sldie but with no joy
I have an image of the device front panel on a Master slide and I am have created moveable buttons on each subsequent slide to navigate to the relevant images I am navigating through.
If anyone has any helpful hints on how to achieve this I would appreciate it.
Cheers
Greg

Hi Greg,
I felt sad when you mentioned the version 5, had hoped you were at least at 5.5. My idea was to create the 'dimming' rectangle on the first slide
and time it for the rest of the project. The option 'always on top' should be checked. In 5.5 and 6 it is possible to show/hide that rectangle on all the slides, but in 5.0 you can only hide the rectangle on other slides than the first where it really is. This was a less known improvement on 5.5 due to my begging to the engineers. That way you could create one advanced action to be attached to all the buttons, without any editing because the rectangle always had the same ID.
In CP6 it would be even easier: a shape button has all the functionalities of a normal button but can be also be timed for the rest of the project: only one shape button with one advanced action would have been needed. Have a look at this blog post: http://lilybiri.posterous.com/why-i-like-shape-buttons-captivate-6
The idea was to make that rectangle initially invisible, and show it when the button to dim was pressed with an (advanced) action. Now I can only offer some tips to make the cumbersome process of editing shorter, you'll need a rectangle on each slide, and will have to edit the advanced action for each button to point to the correct rectangle:
create rectangle and button, with its advanced action for the first slide (and test it) before copying both at once to all the other slides
label first the button and have the number of the slide in the label (like Bt_x where x=slide number)
it is possible then to use the same name for the advanced action to be triggered by the button
before copying: if those rectangles are the only ones, you can keep the default names for them
the copied buttons will get their proper ID, I would relabel them on the slide, go then to the advanced action, duplicate and edit it
So sorry,
Lilybiri
PS: I'm not paid by Adobe, not trying to push you to upgrade

2012 Mountain Lion Macbook Pro screen brightness control disappear

Hi everyone, MY macbook pro bought in 2013 but it is a mid 2012 cMBP 15 inch, it don't have any problem but until recently, the screen brightness control just disappear, I don't have any os x update, still using 10.8.3 version, and I searched the web and most people will just reset the NVRAM by hold the cmdoptionP+R when in the start up screen and I do that too but the screen brightness control just won't come out and the F1 and F2 won't function neither, but the keyboard light key do function & if I press the Fn + F1 or F2 it will has a alert sound which show that the F1 & F2 don't have problem but the special function printe on them(screen brightness control) won't work!
WHy?
I need yr help!!!!

JohnnyChin95,
reïnstalling OS X will probably be the only real solution. Will your house have Internet before your warranty expires? If not, then it would probably be better to send it to Apple, even though there would be a long wait to get it back; you’ve paid for the warranty in your purchase price, so why not make use of it? (You might also want to consider purchasing an AppleCare plan; you can do so any time before your original warranty expires.) Alternatively, do you know anyone with Internet access who would be willing to let you download OS X onto your MacBook Pro at their home?
To my knowledge, all of the original MacBook Pros are manufactured in China; I don’t know where in China, though. If you received a box that has a sticker with your MacBook Pro’s serial number, Ethernet MAC address, Wi-Fi MAC address, &c., and all of that information matches what’s in your MacBook Pro, then that’s probably a good sign that you have an original Apple product.
In my case, I have a relatively slow 3½ Mb/s downstream DSL connection, so it took about five hours for me to download Mavericks. If your Internet speed will be faster, then your download time should be proportionally shorter.

[Solved] Screen brightness control issue

I just purchased a Lenovo T410s. I have set it up to only use Nvidia and only give visibility to the Nvidia GPU. The problem I have is once X starts I can no longer change the screen brightness with the function keys. I'm using KDE and it registers that I'm trying to change the brightness but the screen never changes. If switch to run level 3 I can use the function keys to change the brightness without an issue. I'm confused at what is causing the issue. I'm not sure what information you need to help me, but I will give you what you need if you tell me.
EDIT: I discovered on the Nvidia forums that the backlight function was disabled in the drivers for this model. Apparently when in use it causes squealing sounds.
Last edited by migizi (2010-12-09 13:15:40)

I did some more testing and here is what I found out. I switched my laptop to use integrated GPU only, so that means Arch sees my GPU as the Intel HD. Now I can boot X and control my brightness with the functions keys. Has anyone else run into the problem with Nvidia drivers and the Quatro NVS 3100m GPU?

No screen brightness control on an envy 17

I had some maleware that was removed and it broke the Catalyst Control Center, I only has the Intel 300 HD to view the screen from.
I used the 14-4-mobility-win7-win8-win8.1-64-dd-ccc-whql from 3D GuRu
and,
win64_152822 intel hd 3000 from the intel site.
I have the popup omn the screen from the keyboard shortcut, but nothing haoppens. its on full brightness.
Left click the battery icon in the tray and there is a place for 'Adjust Screen Brightness'. It takes me to a page 'Select A Power Plan' where it SHOULD be but doesn't show up. If I select 'Change Plan Settings' it is there but has no effect. its all still full bright.
It was working fine until the malware.
Did sfc /scannow, nothing to report.
Any ideas on this?
FJW
Envy 17-3090NR 3D NON drivers
14-4-mobility-win7-win8-win8.1-64-dd-ccc-whql
win64_152822 intel hd 3000

Hi @fjward ,
Thank you for visiting the HP Support Forums and Welcome. I have looked into your issue HP ENVY 17-3090nr 3D Edition Notebook PC and issues with brightness control and the Catalyst Control Center. I would uninstall any graphic drivers that are listed and CCC software, restart the computer, then reinstall only the AMD. It will include the Amd Graphics Driver and Catalyst Control Center restart the computer.
Here is a link to the HP Support Assistant if you need it. Just download and run the application and it will help with the software and drivers on your system.
You can do a system restore. System restore will help if something automatically updated and did not go well on the Notebook.
When performing a System restore please note remove any and all USB devices. Disconnect all non-essential devices as they can cause issues.
Please let me know how this goes.
Thanks.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom to say “Thanks” for helping!

Screen brightness control

i reinstalled win 7 pro from factory disks. no bangs. but i can't adjust screen brightness.
probook 4540s

If you need the hotkey driver for the Probook 4540s, windows 7, here it is...
http://h20566.www2.hp.com/hpsc/swd/public/detail?sp4ts.oid=5229456&swItemId=ob_127051_1&swEnvOid=405...
If the brightness is stuck on maximum, you probably also need to install the applicable graphics driver.
If that isn't the problem, unfortunately, I won't be able to help.

Screen Brightness controls don't work in Lion. (Macbook pro 5,1 (Late 2008))

Screen brightness no longer adjustable; all other function keys work.
Help !

You seem to have a situation similar to mine. If I understand correct, your display works perfectly when the brightness buttons work, but when the brightness buttons do not work, your screen dims from, say 100% to maybe 50%, and then back again... all on its own and at random intervals?
That's what is happening to me, is that happening to you too? Just wondering if you found a fix for this since your post.

Screen Brightness control disappeared after upgrading to Mountain Lion

Hello all.
I've just upgraded to Lion, and now I can't adjust the brightness of my screen anymore!
Anyone else has this problem?

I was having the same problem after I completely tore down my Macbook Pro mid-2010 in order to replace the keyboard. (Phew!) After re-asssembling, everything was working again except for the screen brightness buttons (F1,F2). I figured it was a bad keyboard, but after zapping the p-ram, the brightness buttons now work as they should. Thanks for the tip!

[FIXED] after upgrade ACPI can no longer change my screen brightness

EDIT: never mind, it seems to of gone away now...i have no idea what happened, it stopped working randomly then started working just as randomly.....whatever...
Just yesterday i was using my laptop with arch linux with the brightness turned all the way down, as of course it saves battery
but now i turn it on today and the screen is at maximum brightness, and every time i try to change it it just says (in kernel.log) :
Sep 8 10:28:46 Polygon kernel: ACPI: Failed to switch the brightness
Sep 8 10:28:46 Polygon kernel: ACPI: Failed to switch the brightness
so...what got upgraded that broke this? does anyone else have this problem?
here is the past few days of my pacman.log: (it has some entries for kernel-my, a custom compiled kernel, but i get no screen brightness control on my custom compiled kernel, or the default arch one)
[2009-09-01 11:24] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:24] installed kernel26-my (2.6.28-1)
[2009-09-01 11:25] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:25] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:26] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:26] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:29] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:29] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:30] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:30] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:34] removed kernel26-my (2.6.28-1)
[2009-09-01 11:34] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:34] installed kernel26-my (2.6.28-1)
[2009-09-01 11:38] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:38] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:40] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:40] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:40] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:40] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:42] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:42] upgraded kernel26-my (2.6.28-1 -> 2.6.28-1)
[2009-09-01 11:46] removed kernel26-my (2.6.28-1)
[2009-09-01 11:47] >>> Updating module dependencies. Please wait ...
[2009-09-01 11:47] installed kernel26-my (2.6.28-1)
[2009-09-01 12:21] installed rsync (3.0.6-1)
[2009-09-01 12:21] installed abs (2.3.3-1)
[2009-09-01 12:32] installed nvidia_arch-mark-grandi (185.18.36-1)
[2009-09-01 13:01] synchronizing package lists
[2009-09-01 13:02] starting full system upgrade
[2009-09-01 13:03] upgraded python3 (3.1-2 -> 3.1.1-1)
[2009-09-02 09:22] synchronizing package lists
[2009-09-02 09:23] starting full system upgrade
[2009-09-02 09:23] upgraded coreutils (7.4-1 -> 7.5-1)
[2009-09-02 09:23] upgraded libarchive (2.7.0-2 -> 2.7.1-1)
[2009-09-02 09:23] upgraded module-init-tools (3.8-1 -> 3.10-1)
[2009-09-02 09:23] upgraded raptor (1.4.18-1 -> 1.4.19-1)
[2009-09-02 09:23] upgraded redland (1.0.8-3 -> 1.0.9-1)
[2009-09-02 09:23] upgraded syslog-ng (3.0.3-2 -> 3.0.4-1)
[2009-09-02 12:11] removed kernel26-my (2.6.28-1)
[2009-09-02 12:30] >>> Updating module dependencies. Please wait ...
[2009-09-02 12:30] installed kernel26-my (2.6.28-1)
[2009-09-02 12:52] removed nvidia_arch-mark-grandi (185.18.36-1)
[2009-09-02 12:53] installed nvidia_arch-mark-grandi_ver2 (185.18.36-1)
[2009-09-03 10:23] synchronizing package lists
[2009-09-03 10:24] starting full system upgrade
[2009-09-03 19:34] synchronizing package lists
[2009-09-03 19:35] starting full system upgrade
[2009-09-04 09:08] synchronizing package lists
[2009-09-04 09:09] starting full system upgrade
[2009-09-04 12:27] synchronizing package lists
[2009-09-04 12:27] starting full system upgrade
[2009-09-04 12:28] upgraded apr (1.3.8-1 -> 1.3.8-2)
[2009-09-04 12:28] upgraded damageproto (1.1.0-2 -> 1.2.0-1)
[2009-09-04 12:28] upgraded dmxproto (2.2.2-2 -> 2.2.99.1-1)
[2009-09-04 12:28] upgraded fontsproto (2.0.2-2 -> 2.1.0-1)
[2009-09-04 12:28] upgraded videoproto (2.2.2-2 -> 2.3.0-1)
[2009-09-04 12:28] upgraded xf86dgaproto (2.0.3-2 -> 2.0.99.1-1)
[2009-09-04 12:28] upgraded xf86vidmodeproto (2.2.2-2 -> 2.2.99.1-1)
[2009-09-04 12:28] upgraded xineramaproto (1.1.2-2 -> 1.1.99.1-1)
[2009-09-04 12:29] installed pyxdg (0.17-1)
[2009-09-04 12:29] installed setuptools (0.6c9-2)
[2009-09-04 12:29] installed libtorrent-rasterbar (0.14.4-2)
[2009-09-04 12:29]
[2009-09-04 12:29] >>> Deluge's daemon is running with the "deluge" user. The default download directory is /srv/deluge/
[2009-09-04 12:29]
[2009-09-04 12:29] installed deluge (1.1.9-2)
[2009-09-04 12:29] installed python-chardet (1.0.1-2)
[2009-09-04 19:58] synchronizing package lists
[2009-09-04 19:59] starting full system upgrade
[2009-09-06 12:47] synchronizing package lists
[2009-09-06 12:48] starting full system upgrade
[2009-09-06 12:48] upgraded cloog-ppl (0.15.3-1 -> 0.15.7-1)
[2009-09-06 12:48] upgraded gnupg (1.4.9-4 -> 1.4.10-1)
[2009-09-06 12:48] upgraded gstreamer0.10-bad (0.10.13-1 -> 0.10.14-1)
[2009-09-06 12:48] upgraded gstreamer0.10-bad-plugins (0.10.13-1 -> 0.10.14-1)
[2009-09-06 12:48] upgraded gstreamer0.10-good (0.10.15-3 -> 0.10.16-1)
[2009-09-06 12:48] upgraded gstreamer0.10-good-plugins (0.10.15-3 -> 0.10.16-1)
[2009-09-06 12:48] upgraded libdrm (2.4.12-1 -> 2.4.13-1)
[2009-09-06 12:48] upgraded libfontenc (1.0.4-2 -> 1.0.5-1)
[2009-09-06 12:48] upgraded libice (1.0.5-1 -> 1.0.6-1)
[2009-09-06 12:49] upgraded libpciaccess (0.10.6-1 -> 0.10.8-1)
[2009-09-06 12:49] upgraded libxau (1.0.4-1 -> 1.0.5-1)
[2009-09-06 12:49] upgraded libxcursor (1.1.9-2 -> 1.1.10-1)
[2009-09-06 12:49] upgraded libxinerama (1.0.3-2 -> 1.0.99.1-1)
[2009-09-06 12:49] upgraded libxxf86dga (1.0.2-2 -> 1.0.99.1-1)
[2009-09-06 12:49] upgraded libxxf86vm (1.0.2-1 -> 1.0.99.1-1)
[2009-09-06 12:49] upgraded man-db (2.5.5-2 -> 2.5.6-1)
[2009-09-06 12:49] upgraded mesa (7.5-2 -> 7.5.1-2)
[2009-09-06 12:49] upgraded nss (3.12.3.1-1 -> 3.12.4-1)
[2009-09-06 12:49] upgraded pixman (0.14.0-2 -> 0.16.0-1)
[2009-09-06 12:49] installed rasqal (0.9.16-1)
[2009-09-06 12:49] upgraded redland (1.0.9-1 -> 1.0.9-2)
[2009-09-06 12:49] upgraded xf86-input-synaptics (1.1.2-2 -> 1.1.3-1)
[2009-09-06 12:49] upgraded xorg-font-utils (7.4-2 -> 7.4-3)
[2009-09-06 12:49] upgraded xorg-server (1.6.3-4 -> 1.6.3.901-1)
[2009-09-06 17:54] synchronizing package lists
[2009-09-06 17:54] starting full system upgrade
[2009-09-07 12:06] synchronizing package lists
[2009-09-07 12:07] starting full system upgrade
[2009-09-07 12:07] synchronizing package lists
[2009-09-07 12:07] starting full system upgrade
[2009-09-07 12:07] upgraded alsa-lib (1.0.20-1 -> 1.0.21-1)
[2009-09-07 12:07] upgraded alsa-utils (1.0.20-2 -> 1.0.21-1)
[2009-09-07 12:07] upgraded hdparm (9.21-1 -> 9.26-1)
[2009-09-07 12:07] upgraded usbutils (0.84-1 -> 0.86-2)
[2009-09-07 13:15] installed gedit-plugins (2.26.2-1)
[2009-09-07 17:43] synchronizing package lists
[2009-09-07 17:44] starting full system upgrade
[2009-09-07 17:44] Install jack-audio-connection-kit, libsamplerate, ffmpeg
[2009-09-07 17:44] or pulseaudio to get their respective plugins working
[2009-09-07 17:44] upgraded alsa-plugins (1.0.20-1 -> 1.0.21-1)
[2009-09-07 17:44] upgraded gnupg2 (2.0.12-1 -> 2.0.13-1)
[2009-09-08 10:18] synchronizing package lists
[2009-09-08 10:19] starting full system upgrade
[2009-09-08 10:22] upgraded fftw (3.2.1-1 -> 3.2.2-1)
[2009-09-08 10:22] upgraded fuse (2.7.4-3 -> 2.8.0-1)
[2009-09-08 10:22] upgraded gparted (0.4.6-1 -> 0.4.6-2)
Last edited by Polygon (2009-09-10 01:51:39)

Do you happen to know what package broke this? I had this issue a couple weeks ago, and just recently it reappeared.

Screen brightness button won't work

My screen brightness controls won't work (don't ask). Is there a terminal command for screen brightness?

Hi Casey
You may get an answer by posting or searching in The Unix Forums.

Can't disable auto screen brightness on M92z even after using power manager

I find the auto screen brightness annoying and have been trying to disable it. When I go into power manager and turn off "auto" it works, but once I reboot, it's back on again.
I've gone into the sensor section of power manager and disabled the sensor but that too does not stick. I've also checked that "magic brightness" setting as well. Nothing seems to stick after a reboot. Things work until I reboot.
I have installed the latest power manager, but 2 things seem strange. website says latest version is 3.40.0002 but when download and install that version it reports 3.40.0001 (notice the 1 vs the 2). Also in control panel it says power manager 32 bit but my OS is Windows 7 64 bit.
Roveer

Alright, so this is ridiculous. Back to square one with nothing booting. I managed to get it booted up once fully, and another time booted off the OS10.3 disc (froze during disk repair in Disk Utility).
I don't have another hard drive to try, and I've taken it apart and reset everything.
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My screen gets dim and the brightness control buttons don't work

My screen is frequently dim. The brightness control buttons display that they are working, but the brightness doesn't actually change. Any ideas why and what I can do?

Thanks for the suggestion. Actually, I had tried that but still had to go into preferences any time I wanted it brighter. After I posted, I found a thread using some different keywords and found that people were having the same problem with OS versions up to 10.7.2 but solved it with the latest update (10.7.3). I just installed it and now seem to be able to adjust the brightness with my keyboard no problem. I appreciate your reply anyway!

IMac G5 (iSight) with 10.4.11: Screen always dimmed. Starts at full bright and a second later dimms and stays like that forever. Brightness controls work normally under this circunstance. Please help !!!

iMac G5 (iSight) with 10.4.11: Screen always dimmed. Starts at full bright and a second later dimms and stays like that forever. Brightness controls work normally under this circunstance. Please help !!!
Please don't tell me to adjust anything on the preferences, since I have tried all. I think it may be anoter kind of problem, maybe hardware related or anything.
I ran the Hardware repair DVD and everything was ok, but when the imac restarted the screen was very lit again, but when it went sleep, when it went awake again the screen got dimmed again. Because of that I think that the problem could be software related, but who knows. Excuse my english.

I can't see another possible answer - the longer your machine is up, the more the power supply is stressed, it protects itself by dimming the screen to lower the draw on it.

10.5.6 disabled screen brightness control...

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