Incorrect display layout with scaling
I have a laptop with a 4k display, which I use with a 200% scaling.
I sometimes use this laptop in conjunction with a FHD videoprojector at 100% scaling.
In the layout of the display setting, the two screens should have the same physical size (4K@200%=FHD@100%), but actually the 4k@200% screen appears twice bigger.
I am on debian testing, and this problem did not exist a few months back (not sure exactly when it appeared).
Edited by Frédéric Parrenin