Monitor Calibration

Hello. I can't seem to access control to the RGB channels separately.

MacBook Pro 13″, macOS 10.15

Posted on Jan 4, 2021 5:17 PM

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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.
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1 reply

mario49

Community Specialist

Jan 7, 2021 6:17 AM in response to joaopeixoto89

Hello joaopeixoto89,

After reviewing your post, it seems like you want to control RGB channels when calibrating the display. We would recommend you use these articles for more information.

Calibrate your Mac display

Change your Mac display’s color profile

Please don't hesitate to let us know if the steps resolved your issue or if you need additional assistance.

Thank you for using Apple Support Communities. Have a nice day.

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Monitor Calibration

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