Apple silicon computers see external monitors as TV screens and output YPbPr.
This is a major issue that many internet users complain about. It is difficult, if not impossible, to get proper color reproduction on external monitors.
The issue is well described in this article: https://petapixel.com/2021/10/07/apple-silicon-is-still-a-pain-to-use-with-color-accurate-monitors/
And there is a manual fix on GitHub, thanks to the user GetVladimir: https://gist.github.com/GetVladimir/c89a26df1806001543bef4c8d90cc2f8
I can get RGB output following those instructions with the Mac Mini M1 and a couple of Dell s2721qs. However, I still have issues calibrating the gamut with xRite i1 Display and different calibration softwares, I can calibrate the white point and brightness with the instrument, but then I have to profile it by eye with Display Calibration Assistant to get correct gamut. I also have to kill WindowServer a few times a day after sleep. This causes all the applications to close and I need to log back in to get RGB back instead of YPbPr.
I just want to know if Apple is aware of this problem that affects, I think, almost everyone who works with colors and everyone who cares about it. It's 3 years since the M1 have been released, I'd like to know if we can finally expect a fix.
Mac mini, macOS 13.1