![]() rb file from your Downloads folder directly into Terminal and hit enter: Some recommend switching your Macbook (Pro) into clamshell mode during this step, but I've found that's not necessary as long as the only other display connected is the fuzzy display you're trying to fix.ģ) Open a Terminal window and run the Ruby script from above by simply accessing the file via Terminal an easy way to do this is just drag the. plist files, but some clever folks have boiled it down to a simple script that will generate the correct files for us, then we just have to put them in the right place.ġ) Start by downloading Andrew Daugherity's EDID Patch here: Ģ) Unplug any other displays connected to the computer. See the 1080p, 1080i, and 720p options? This is a giveaway that your display is being treated as a TV.Īll we have to do is override the display so that OS X uses the RGB color space. You can verify this by opening up the display settings, change the resolution to "Scaled" and look for values like "1080p" and "1080i". Turns out what's happening is that Mac thinks the display is actually a TV rather than a monitor, and because of that, it changes the color space from RGB to YCbCr. ![]() Catalina and Big Sur recently made it somewhat more complicated, but I've dug through a trove of resources on the matter and believe I've found the best, and safest fix. Everytime a new Mac version comes out, I generally have to repeat this process. In my case, a Philips 298P4, an old 29" ultrawide display. I've had this problem for years where I plug my Mac (dated all the way back to 10.6 Snow Leopard) into an external display, and the text appears exceptionally fuzzy for what should be a crisp display.
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