1440p missing high res on Display resolutions

[nix1016]

Originally Posted by JanB

This is a sorely missed feature in the macOS DisplayLink driver.

However, there is a workaround. Take a look at the project "BetterDummy": https://github.com/waydabber/BetterDummy

This will give you HiDPI even if MacOS doesn't support it.

You get the best performance when using "FullScreen Stream".

Not OP, but I'm having the same problem with a secondary 3440x1440 monitor where the highest resolution I see is 2560x1440.

I've downloaded BetterDummy and created a dummy screen with a resolution of 3440x1440 and associated my secondary monitor to it. The resolution still doesn't seem to be correct and I lose a lot of features such as snapping to the entire screen, menu bars, etc and the screen appears fuzzy.

Is this the correct way to do it? I also can't seem to find the option for the FullScreen stream?