Catalina: "Could not load Display preference pane" . Dell U2515H with HiDPI hack.

Fix: Delete the custom icons

sudo mount -uw /

sudo rm /System/Library/Displays/Contents/Resoruces/Overrides/DisplayVendorID-10ac/DisplayProductID-d070.icns

sudo rm /System/Library/Displays/Contents/Resoruces/Overrides/DisplayVendorID-10ac/DisplayProductID-d072.icns

https://comsystoreply.de/blog-post/force-hidpi-resolutions-for-dell-u2515h-monitor