Skip to content

Fix Macos Catalina and LG 4K HDR monitor

Jump to bottom
mvgijssel edited this page Jun 22, 2020 · 1 revision

Copied from https://discussions.apple.com/thread/251213356?page=3

  1. Download the file patch-edid.rb from https://gist.github.com/adaugherity/7435890
  2. put it on your Desktop
  3. in the Terminal:
cd Desktop
rb patch-edid.rb
  1. Now you will have a folder called "DisplayVendorID-..." (in my case it's DisplayVendorID-1e6d)
  2. Reboot your Mac in recovery mode (reboot and hold CMD + R). If you have FileVault enabled, activate your Volumes with the disk utility now.
  3. Exit disk utility and switch to Terminal.
  4. Make a copy of the original display
cp -vR /Volumes/OSX/System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-1e6d /Volumes/OSX/System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-1e6d_ORIGINAL
  1. Copy the updated force RGB driver onto the existing one
cd /Volumes/OSX/System/Library/Displays/Contents/Resources/Overrides
cp -rf /Volumes/OSX/Users/username/Desktop/DisplayVendorID-1e6d .

Make sure not to miss the last dot. If it doesn't work, probably the path isn't entered correctly. This will delete your monitor description and replace it with the one you generated. Now reboot your Mac and enjoy a working display.

Clone this wiki locally