Gnome is the only Linux environment I know of (including DEs like KDE, window managers like Openbox and compositors like Sway) that support the TILED attribute

Gnome is the only Linux environment I know of (including DEs like KDE, window managers like Openbox and compositors like Sway) that support the TILED attribute (present in the monitor's EDID). So high-end displays like LG Ultrafine 5K, etc. can only be used at native resolution under Gnome. All the others handle it as two displays. :sad face: