ASUS ProArt line of monitors are calibrated for highly accurate color profile needs in the art and video industries. While there are better monitors out there for high-end professionals, the ProArt line is fantastic for the average every-day media professional.
One thing I like to do when I first setup a new monitor or computer is calibrate the colors. The ProArt series are designed to be color accurate out of the box, but that doesn't mean much when your OS of choice has its own color profile.
I use the X-Rite i1|Display Pro for my monitor calibration and when trying to do the calibration, I would receive an error about not being able to save the LUTs. I would make the necessary adjustments to the monitor as suggested to get around the error and the calibration would complete.
Afterwards, I installed the ASUS Chroma Tune which would freak out and tell me "The selected display is not supported." This error would show up even though in the Preferences of the Chroma Tune software it showed that I was using the PA279 monitor. What's going on??
As it turns out, the problem is with the DDC/CI setting in the OSD Setup. Long story short, DDC/CI communicates between the monitor and the computer, allowing you to change the monitor settings from the computer without touching the monitor menu buttons. In order for the X-Rite software to properly calibrate, you have to disable the DDC/CI setting. I won't go into detail on how DDC/CI works but Appauls does a great job if you want to learn more: https://appuals.com/what-is-ddc-ci-and-how-to-use-it/
Now that I know what setting caused the Chroma Tune error: The selected display is not supported, it makes sense why I was getting this error when disabling the DDC/CI setting and since I couldn't find anything online about this error, I had to do my own sleuthing and back track to figure it out. Keep in mind, this will only work if your monitor is supported by the ASUS Chroma Tune software to begin with...
Note: These instructions apply to the PA279. It might vary from different models.
Hopefully this helps someone else. Feel free to leave a comment if this got you going!