How to set display color calibration same for all users and login screen?

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Level 1

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How to set display color calibration same for all users and login screen?

I tried to copy $HOME/Library/Preferences/com.apple.ColorSyncCalibrator* and $HOME/Library/Preferences/com.apple.ColorSyncUtility* to /Library/Preferences to set the display color calibration during the login screen the same as my user account without success.

How to set the display color calibration for the login screen (or the default value for this Mac)?

Message was edited by: isenberg

intel and PPC, Mac OS X (10.6.1)

Posted on Oct 31, 2009 9:23 AM

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Answer 1

Kappy

Level 10

362,259 points

Oct 31, 2009 9:52 AM in response to isenberg

The display preferences file is stored in the /Home/Library/ColorSync/Profiles/Displays/ folder if it's been saved for the user. To have the dsiplay preferences used for all users move it to the /Library/ColorSync/Profiles/Displays/.

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Answer 2

isenberg Author

Level 1

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Oct 31, 2009 10:11 AM in response to Kappy

There it was already, /Library/ColorSync/Profiles/MyMonitor.icc. However, on the login screen the default color profile of the display is still selected.

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Answer 3

Kappy

Level 10

362,259 points

Oct 31, 2009 10:28 AM in response to isenberg

Be sure to remove the one in the /home/library/ColorSync/ folder if there is one. As for the screen's background, at the login window it will be the OS X default. You cannot change that without using a third-party utility such as TinkerTool System - VersionTracker or MacUpdate - that will let you select a different background, if this is what you actually want to do. The screen background is not configured in the display calibration.

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Answer 4

isenberg Author

Level 1

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Oct 31, 2009 10:44 AM in response to Kappy

No luck, even after reboot. It looks like during the login screen the ICC profile or data automatically delivered by the monitor via DCC is used.

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Answer 5

Kappy

Level 10

362,259 points

Oct 31, 2009 10:56 AM in response to isenberg

Sorry, then, but I don't have a solution if there be one. Exactly what is the problem you want to solve? Is it the actual display calibration that you created via Displays preferences? Is it a ColorSync matching issue (display with printer, for example?) Or the screen's resolution and/or Desktop image? I'm just not clear about it.

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Answer 6

isenberg Author

Level 1

10 points

Oct 31, 2009 11:27 AM in response to Kappy

It's only a minor annoyance: The login screen (where you enter username and password) is shown with a wrong display calibration, way too bright and blue. After login the correct calibration is loaded which was selected via system display preferences.

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Answer 7

Kappy

Level 10

362,259 points

Oct 31, 2009 11:52 AM in response to isenberg

OK, I understand. And you did create a calibration profile using Displays preferences? And you saved it for All Users? If not, then open Displays preferences, click on the Color tab, click on the Calibrate button. Check the Expert box. Calibrate the monitor. When you save the result check the option to save for All Users. Open you /Home/Library/ folder and see if you have a ColorSync folder. If so delete it. Now restart the computer.

If you are using a third-party external monitor then you should use the monitor's calibration controls to set the monitor's appearance as close to what you prefer via the display calibration you created. However, if you are using an all-in-one then the opening display appearance does not load a display calibration preference file unless it's located in the /Library/ColorSync/Profiles/Displays/ folder.

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