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Date Created: 2/10/2012   Date Modified: 2/29/2012

+DDC and/or ADC Issues With ColorMunki

DDC (Display Data Channel) and X-Rite’s “ADC” (Automatic Display Calibration) protocols are designed to simplify and streamline the display calibration process.  Not all DDC enabled monitors work well with our ADC.  There are some limitations that can sometimes be attributed to the graphics card, connection type, the monitor’s implementation of DDC, as well as our ADC functionality.  If you suspect that there is a problem with the way ADC is handled by your system, try the following suggestions: 

 First, check to see if the computer display’s menu has “DDC” or “DDC/CI” enabled or turned on.  If so, disable it or turn it off in the display’s menu.  Furthermore, we would recommend turning off “Enable DDC” or “Enable ADC” (Automatic Display Calibration) and not using the video LUTs to adjust brightness by opening the ColorMunki “Preferences” window.  Follow these instructions to turn these functions off:

  1. On a Mac…go to “ColorMunki…” in the menu bar and click on “Preferences”.  On a PC…go to “File” and click on “Preferences”.
  2. Uncheck “Achieve display luminance value using video LUTs” and “Enable ADC” or “Enable DDC Calibration”.
  3. Click “OK” to save these settings and close the “Preferences” window.
  4. Close the ColorMunki program, reboot the computer, and try profiling after the computer has restarted