I have the same problem and I tried pretty much everything, SIP disabled, adding to /System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-#/DisplayProductID-*
RDM does not let me to select the 1090x1080 with HIDPI it does not take effect after clicking on it, same with SwithResX
SIP enabled and trying the one-key-hidpi github tool writting into /Library/Displays/Contents/Resources/Overrides/DisplayVendorID-#/DisplayProductID-*. (which btw this directory does not exist, we do have to create it I assume ? )
This is like an April fools joke that we have to spend time fixing an external monitor which is something a VERY basic laptop can do efficiently but our macbooks can't handle it.
Is apple going to fix this issue ?
Anybody facing the same issue using Catalina 10.15.7 ?
hqdev
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