2/27/2024 0 Comments Apple monitor colors![]() To save the day, I found the repository saying that you can put the configuration under a different folder, accessible in normal mode. Since Big Sur, the System folder is read-only, even in Recovery Mode. However, the usual directory ( /Volumes/Macintosh\ HD/System/Library/Displays/Contents/Resources/Overrides/) to place the configuration is not accessible anymore. As the problem still occurs, the 2013 post is still getting updates and comments, and the first part of the solutions works: run this ruby script and you’ll get a configuration file for your monitor that will override the MacOS default configuration and set it to Full RGB space. So, finally, I found what was the solution, combining two solutions. Another option would be to try a different cable Thunderbolt/DisplayPort, which actually would probably fix the issue, but there was no cheap option here. The fixįirst, I tried going the easy way: check calibration from System Preferences, change color options. Also, some of the display own options were not available (Samsung Magic Bright, HDMI Black Level, Eye Saver Mode), though there was no indication in the display the signal coming was in YCbCr. It was causing, in my case, for images to look less sharp, a bit blurred, and shallow colored. The problem seems to be MacOS misinterpreting the plugged display and sending the colors at the YCbCr space instead of RGB. I have no idea why Apple still let this happen - don’t they have QA capacity to run a quick integration test with general UHD monitors? - as it is an occurring issue dating back to 2013 at least. But if you using a different UHD monitor and a HDMI cable, it is almost certain to happen in any Mac. It looks like this problem doesn’t happen when a monitor is connected through a Thunderbolt/USB-C port or, probably, if you are using one of the few monitor options from the Apple Store. Took me sometime, but I was able to fix it. ![]() And it was thanks to the Windows machine that I started to notice the screen looked way better (color, sharpness) there than when I was using the Mac. My current setup consists into a Mac Mini and company-issued Dell Latitude both through HDMI 2.0+. Recently I upgraded my monitor from a Dell P2319H to a Samsung UR550 (LU28R55) to introduce myself into the 4K world.
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