The Display Calibrator Assistant opens and walks you through the process. You need to press the Option key to launch this assistant in Expert Mode, which gives you more options for detailed calibration. When the assistant launches, you'll notice that your display's colors change a bit to the default settings. Click Continue. Every display panel is slightly different, and your lighting is different, so the next screen helps determine the display's native lighting response.
You'll find two sliders and a square in the center of the screen. Follow the instructions and move the sliders until you cannot distinguish the Apple logo from the background. Do this slowly, and take your time, because it's a subtle change. When you've finished this, click Continue. You will see a number of screens like the ones above, each asking you to move the sliders until the Apple logo blends into the background.
They all act on different colors. Click Continue after you've completed each task. You then see a "Select a target" gamma screen. Gamma is the contrast of the display. You can check Use native gamma, or adjust the slider to what looks right to you. The next screen offers to set a target white point. The only time you'd want to change this is if you have professional needs and know exactly what white point you need to use.
Leave "Use native white point" checked, then click Continue. You are next asked if you want to allow other users to use your calibration. If you're the only user on the Mac, this doesn't matter, but if you share your computer, it's a good idea to check this so other users will benefit from your calibrated colors. You can then name the profile and save it. By default, this will be something like iMac Calibrated, but you can name it with anything you like, such as a date.
The conclusion screen shows the details of the calibration. It's now worth clicking the profile you were using previously, and then clicking the new one to see the difference. What counts is that you are comfortable with the color profile. The above process is great for most Mac users, but if you work with photos or videos, or if you want to print your own photos and have the colors of your prints match your display, then you need a color calibrator.
It was perfectly normal yesterday. Guest Guest. Sounds similar to what my sister experienced with her Macbook Pro Then somehow the funky screen problems disappeared.
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I assume it is the LCD wires that rub on the hinge of the screen that somehow caused a problem. Why not let your macbook be on for several hours while running several movies. Maybe having OnyX optimize your system first then watching movies will work, but i can't say for sure with confidence that it will work.
But hey if it works, reply back.
Nov 28, 1, 0 11, If Its under warenty contact service center. Thanks for the replies! We shut it down for a few hours and brought it back up just now. On closer examination I notice that in Safari browser, sometimes they move when I move the mouse, sometimes not. Other times they multiply when I scroll up or down. Minimize the browser and they're on the desktop and they don't move or multiply. Also they're not round, they're square and just a few pixels in size and in random colors, black, white, red, blueish.
So I think I got the "watching movies" thing covered. I just restarted it and there are no dots on the gray apple screen with the spinning wheel. Perfect gray screen. But when the User Login screen comes up, there they are. Maybe its a video controller or driver problem, seems like? We always have it propped up so it can get air circulation, but maybe temperature has gotten to it.
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I will try some different screen resolutions We watch ghost shows on Netflix a lot. Maybe we caught one! Smaller resolution makes the dots bigger. They stay the same number of pixels. Still there during screen saver.
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When you move an icon on the desktop, the dots all move to different random spots. When you drag a window, they start filling up that window till you can't read whats on it. The dots move around inside any progress bars that are moving but stay still on the rest of the screen. Seems like a virus. I thought Macs can't get a virus Ya, it could be a driver or GPU problem. Have you tried the application OnyX? It did wonders for me when i had my iBook G4 and it made my sisters Macbook faster. It is like Ccleaner for windows.
It will run as new and sometimes better than new. Remember to do a back-up before using it, cause if laptop shuts down mid-way, you might loose your information. After optimizing with OnyX and uninstall the gpu driver if you can in a Mac.
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After installing it, use OnyX again and optimize it it is my personal habit to use optimization tools regularly to maximize performance and reliability. If this doesn't work, it could be hardware problem with the gpu Jul 2, 12, 3 71, 2, Sounds like the graphics card is going bad or overheating and you are getting artifacts on the screen. Simple way to test. Burn the MacOS disc or run recovery or do whatever it is you Mac people do and see if it happens there.
If so, it's the GPU.
How to Calibrate Mac Displays for the Best Picture & Color
The Mac installer runs on the same OS as the OS itself, same drivers, etc so easy way to verify if it's your installation or your hardware. I say overheating though, probably from watching it like crazy on Netflix. Laptops aren't really meant to be run all the time and you're probably doing P hidef movies, pushing it further.
May 1, 1 0 10, 0. JonBro, Did you ever get a resolution or root cause for it? I have the same issue. Seems to increase with Safari open and upon mouse movement. Help dudes!