Screen Changes Brightness

When I'm using my new MacBook Pro, the screen sometimes gets dimmer. I could be using Safari or any other program, and the screen just dims. This only seems to happen when I'm using OS X. I'm using Vista and Bootcamp too.
Any ideas?

Also, your screen may dim if you leave the system idle for a time to save power. This can be controlled by System Preferences -> Energy Saver -> Options -> "Automatically reduce the brightness of the display before display sleep" setting.
A small note. This option doesn't work reliably and the display tends to dim regardless of the setting of this preference. One way it can be managed is to extend the time until the display sleeps in the Energy Saver control panel - the dimming occurs at half the time set for the display to sleep.

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Screen turns bright yellow & green curser turns into a large yellow square.

When I play any type of 3d game, such as world of warcraft my screen turns bright yellow and green. The mouse cursor turns into a large yellow square. Then it will make squiggly patterns across the screen in these colors, Almost like a argyle pattern. The only way to fix this is force quit the program (or if I can see the game still) I have to make it non-full screen. Iam thinking it might be a video card error, but iam not sure. Anyone experience this before?
Steve.
Imac Mac OS X (10.4.6) First gen Imac with intel chip 20 inch. 128 vid card.

Are you running your monitor at its native resolution? If changing the resolution of the game solves the problem as I take it from your sentence quoted here:
"The only way to fix this is force quit the program (or if I can see the game still) I have to make it non-full screen"
Then you probably should try changing the resolution of the screen before playing the game. Most games will do this automatically but if the ones you are playing do not then you may need to search for updates to them. Very few games are designed to run in wide screen mode, but generally in more traditional resolutions such as 640 x 480 or some other resolution with the same relationship between width and height.
This is my best guess anyway. Hope you get the problem solved.

My screen reduces brightness while using apple tv, any suggestions?

My screen reduces brightness while using my apple tv - any suggestions?

Does it just look darker all the time or does the brightness change over time?
If it just looks darker, check Settings>Video and if set to RGB Low try RGB High or YCrCb.
I was watching a digital copy of final Harry Potter last night that came bundled with the Blu Ray - could not believe how dark the film was - I used to routinely use RGB Low on AppleTV1, and such settings options have only just appeared on AppleTV2. I could see hardly any shadow detail on RGB Low, much improved on RGB High.
AC

GP70 screen too bright

Hi, I just bought a GP70 2PE with Core i7 and so far I quite like it. I installed Windows 7 x64 instead of the default Windows 8.
However, I have one problem with it - the screen is very bright - even on the lowest setting, the screen is brighter than my old laptop (a 9 year old Acer 5020) on the highest setting. While a bright screen will be great for outdoors use (or in other brightly lit places), using the laptop in a dark place hurts my eyes (while the old laptop and the CRT monitor of my main PC do not).
Opening the graphics control panel and setting brightness.contrast to minimum helps a bit but makes the image look bad. Is thee a way to reduce the backlight brightness (without opening the laptop and modding the backlight circuit, which I could do, but do not want to lose the warranty)?

I would like to thank Lenn and Dennis for your suggestions, all of which I have now tried. I've taken so long to respond because I wanted to wait 24 hours - and another night - to see if one is better than another. Changing the screen profile made a very small difference, and at first Brightness seemed to do a better job, but the overall winner in terms of flexibility is undoubtedly Shades, which I'm using right now.
Thanks again, both of you!
Uxenden

Mail.app icon changing brightness for no apparent reason.

I'm seeing a weird issue, where the Mail.app icon is slowly changing brightness over time. Starting normal, then over the course of a couple of hours, goes either brighter or darker.
Restarting Mail.app "resets" it.
This is how it looks currently: http://dl.dropbox.com/u/615699/Screen%20shot%202010-10-19%20at%2019.14.13.png
I did not see this issue on Leopard.
Does any one here know how to fix this?

Could be the problem?
If the issue is limited to your user account try starting up Safe Mode (It will take more time to startup in Safe Mode because it runs a directory check.)
If your Mail icon functions correctly that way, go to System Preferences >> Accounts >> Login Items, and remove them. Boot normally and test. If not go to/Users/yourname/Library/Contextual Menu Items and move whatever is there to the desktop. Then do the same with /Library/Contextual Menu Items. Lastly, try moving/Users/yourname/Library/Fonts to your desktop and restarting.
Log out/in or restart, if that sorts it start putting items back one at a time until you find the culprit.
-mj

Change brightness my laptop - artifacts

Hi,
I use Xorg Server version 1.10.4 (problem is in 1.11 version too, anyway).
If I change brightness using multimedia key several times up and down my screen do weird things and I need reboot my machine. I didn't change this often, but problem is a long time.
I don't know how describe this better, but i hope you understanding my problem.
I'm waiting to response.

There is no such thing. You cannot upgrade the video. It is part of the motherboard. Sorry.

T450s Impossoble to change brightness, neither in win8.1 settings or with hotkey

I have windows 8.1, the hotkeys havent worked since i upgraded. Neither does it work to change brightness in the charms menu. My eyes are literally screaming of pain while working in dark rooms, please help! I have installed ALL updates in System update and Windows Update. I have also installet the new Hotkey package: http://support.lenovo.com/no/nn/products/laptops-and-netbooks/thinkpad-t-series-laptops/thinkpad-t450s/downloads/DS029026.

Colonel:
I am not sure where it updated from, but its the 10.18.14.4206 driver, released 29.04.2015. This is the same driver available on lenovo support: http://support.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-t-series-laptops/thinkpad-t450s
Sliout
I am not sure if it worked pre- win 8.1 since upgrading from 8.0 was the first thing i did when booting the computer. (Win 8.1 Enterprise by the way).
I bought it brand new.
Display adapter version: 10.18.14.4206. I can see that Intel has released .4222, should I install that? Its not available through lenovo or windows update.
I have a touch screen. I found a sticker with the text P/N on the chassis: Label P/N: SL 10G56446
Yes I have tried Microsoft Basic Display Adapter (tip from google), but i tried it again now since we have updated other drivers along the way. Still not working

Unable to open email inbox or files. screen changed suddenly last night. got some message about patch not being applied. i have the patience of a gnat and have no clue how to fix this issue. HELP! in English

I'm running Mozilla-firefox on a Lenovo laptop. Last night the screen changed suddenly. brief alert about patch. unable to open email inbox to read/send emails. logged off thinking all would be right by morning. today, can access internet, google, etc, but unable to open email inbox. plus the listing of the various yahoo accts has changed the sequence order. please help. i depend on my email for my livelihood. i can read emails on my blackberry so the issue is not my internet provider.

In the patch 29, it is
function encode_attachment(str) {
var c, i, s = ''
for (i = 0; i < str.length; i++) {
switch (c = str.charAt(i)) {
case ' ':
case '#':
case '?':
case '%':
s += NN ? '_' : escape(c); break
default:
s += c
return s
NO issues seen, Able to open attachment which has space in the file name.

Is The 24" iMac Screen Too Bright For Longevity ?

I have just been in an Apple Store testing both the 20" and 24".
I had heard that the 24" screen was brighter but assumed that, like so many claims, it would only be a marginal difference.
I was amazed to see that it was considerably brighter, making the 20" look extremely dull by comparison.
I checked and found that both machines were on maximum brightness. Even set to minimum, the 24" seemed brighter.
I don't know about LCDs but with "normal" electric bulbs, over-running them can give a brilliant but brief life.
Are these new monitors naturally bright or are they being over-run and likely to burn out just after the warranty expires?
Ian.

I realise we are dealing with a different technology.
Does that mean that the brightness will have no detrimental effect on longevity?
Ian.

Is it possible to change brightness in video play back?

Is it possible to change brightness in video play back, without having to go to settings?
If not, then who agrees this should be possible?
I’m sure most iphone users have the stock brightness setting set to low to save battery power, but it’s very irritating when you go to watch a video in bright lighting conditions and in order to see it properly you have to go back out and change it.
I am not computer programmer, but I’m sure it would be possible to have a slider (just like the volume) and could be introduced in a update.
I think it would improve the overall iphone experience just that little bit more.
What do you think?

All Help > System Info does is to report your system specifications so you can copy and paste them in the forums for troubleshooting purposes.
You can choose what to highlight and copy, but it does not change anything in your system like editing a configuration file would.

How to Change Brightness, Contrast and Saturation of an image in LabWindows/CVI (Urgent) ?

Hi All
I want to change brightness, contrast and saturation of an image, plz help me how it will possibe in labwindows/cvi
Thanks

CVI does not include native functions to operate such changements on an image.
It may be possible that these functions are included in IMAQ library, but I never used ot so I'm not sure. In any case, this is an additional tool to install and it is not free.
Alternatively, you may need to search for a third party library that offers such functions.
Proud to use LW/CVI from 3.1 on.
My contributions to the Developer Zone Community
If I have helped you, why not giving me a kudos?

Screen changes are not active in production tenent

Hi Experts,
I realized the transport of a solution to the production environment and as can be seen in the attached image the solution has been successfully activated.
The scripts "OnSave", "AfterModify", etc for example are up and running in the production environment, but all the changes that were made on screen are not displayed to users.
Does anyone know how to make the screen changes available to users?
Best regards.

Hello Felipe,
What tool did you use to "make changes on screens"?
UI Designer started from SDK?
Adaption mode in UI?
Bye,
Horst

What makes my screen change after going to sleep?

I have os10.9.2 and since I installed it 6 weeks ago my screen changes sizes after it wakes up. I have a mac mini.

At the bottom of your thing it says you are using 10.7.1. Is this correct? If so, run Software Update first, and see where that takes ya. From there, if you are still having issues with the black screen, try opening Disk Utility, and hit Verify Disk. If this comes up with errors, re-start your computer holding the Option button down, from there, select Recovery Disk as your start up disk. You will be able to locate Disk Utility in there, and you can Repair Disk from there.
If it does repair disk successfully, that could be part of the problem. If that doesn't work, follow the steps in this article to reset PRAM/NVRAM http://support.apple.com/kb/ht1379
Even still, if that doesn't seem to correct the problem, i would back up everything on your computer to an external harddrive, erase, and re-install 10.6, run Software Update a few times, check the app store for the digital download of Lion....you should not need to "buy" this again, it should see it in the purchased section..
Update again with Software Update when you get the successful re-installation of Lion. I'm not 100% positive with the whole re-installation steps, if it walks you through going through the Migration Assistant or not, but even if it doesn't, that's okay. You can still locate Migration Assistant via the Utilities folder and bring back all your Time Machine stuff again.
Still if you want to dig even deeper to see if there is a problem with your hardware, you can run Apple Hardware Test. Check this article for steps...http://support.apple.com/kb/HT1509

Screen changing colors

Hey guys. Lately every time I've woken up my Macbook the screen changes colors. It will go through all of the primary colors and then some gray horizontal and diagnoal stripes, and sometimes the screen will flash in and out. Usually if I close the lid and reopen a couple seconds later, it's fine. But, is there any way of fixing this? I don't want it to turn into a bigger problem.

You may be having a problem with your screen, your integrated GPU or your connection cable between the logic board and the screen. The only way to ferret out which problem you have would be to take your machine into your local Apple Store or an AASP and have them run diagnostics on the unit. They can give you an idea of what's up with the machine and an estimate on what it would cost to fix it.
Good luck,
Clinton

Pavilion DV& screen changing colors

When turning on the laptop, the screen changes colors (red, green, gray, blue, etc) before coming on. It took almost 25 minutes for it to stop and then finally get the sign on screen.
What could be the problem? The laptop is about 3 years old.
If it need to be repaired, where would i go (Staples? BestBuy?)
Is it something I could fix myself?
TIA

@harperhp ,
Hello and thank you for posting on the HP support forum. Generally when you experience this issue it is due to a failure of the graphics card.
Does this happen if you try and boot into safe mode?
Entering Safe Mode (Windows 7)
Please post back if you can get into safe mode without this issue. If you have the same problem going into safe mode then you will want to contact HP phone support for repair options. You may not be able to get the parts through third party vendors.
Please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region.
http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
Thank you again for posting and have a great day.
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
D5GR
I work on behalf of HP

Screen Changes Brightness

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