Overrides macOS external display EDIDs to force RGB color

William Alexander

Last update: Dec 21, 2021

Related tags

Color edidiotic

Overview

edidiotic

edidiotic creates EDID overrides for external displays on macOS that set the display type to RGB color and removes all extension blocks. This seems to fix an issue where macOS uses YCbCr with chroma subsampling on external displays. This also fixed a rather particular issue of mine involving a Thunderbolt to HDMI 2.0 dock.

I haven't added much in the way of error handling, usability, or versatility, but if you find this at all useful please open up an issue as I love to work on projects I know people are using.

edidiotic is based on adaugherity's script but gets display info directly via IOKit rather than by parsing the output of the ioreg command. It also appears that adaugherity's script incorrectly sets the color mode to "Monochrome / grayscale display" instead of "RGB color display" as per the EDID 1.3 standard, which edidiotic fixes.

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Releases(0.0.1)

0.0.1(Oct 11, 2021)

Initial release of edidiotic
Source code(tar.gz)
Source code(zip)
edidiotic.zip(25.64 KB)

Owner

William Alexander

GitHub

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