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I want to calibrate my display using the built-in calibrator (Preferences > Displays > Colors > Calibrate). This worked great in the past, but since last week it behaves strangely. When I start a calibration and move the value-sliders (like in the "can you see the apple" step) the display automatically re-calibrates after I release the slider. That means: I set the slider to make the apple vanish, but when I release it the display flickers and is recalibrated, so that I can see the apple again.

The same happens when I switch the color profile. The profile is applied for about 1 sec but then the display "calibrates" and changes its colors, while the profile stays selected in the Preferences.

I have checked my display's hardware settings (on-screen display) for some kind of auto-calibrate setting but there is nothing as such.

I have also tried to reset the Parameter-Ram of my Mac, but this had no effect.

What could be causing this odd behavior?

I'm on Mountain Lion.

Update: This occurs for my admin user only. When I switch to another user everything works fine. So this must be a Mac OS issue, no hardware problem.

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Did you run "Repair Permissions" yet (via Disk Utility)? –  patrix Dec 3 '12 at 16:25
    
@patrix Good idea, but no effect. However I noticed that this only occurs when I want to create a new profile or want to select one of the profiles from /Library/ColorSync/Profiles/Displays (privileges are r/w) but not the built in profiles like sRGB. Also it seems to me that it is only the gamma value that keeps resetting itself... –  codingFriend1 Dec 4 '12 at 7:59

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