Phoronix: 4K Tiled Displays Become An Issue With X.Org
Aaron Plattner of NVIDIA has laid out the latest problem in the X.Org world: how to deal with 4K tiled displays that show themselves to the PC as two displays...
tl;dr X.org sucks anyway, does Wayland solve this issue?
Are there so many 4K display users (on Linux) that this really needs to be an issue?
X.org should treat them as one display so that normal programs functions
as expected. For programs that would like to use them in a special way,
information should be provided in a non breaking way.
Treating two separate displays as a single display must be solved in each display server separately.
Ideally, it would be solved in KMS so it'd just work everywhere, but it'd be non-trivial to configure there in case you wish to keep them separate. The kernel command line isn't really userfriendly.