> Felix Miata wrote: > > > Clear as mud. > > > > Monitor = display. This is physical. > > > > Screen for X purposes is comprised of from 1 to N displays aka 1 to N > > monitors, and most often is. It's a logical construct in which displayed > > output can be either mirrored (cloned) or discrete (unique). > > > > Not exactly - it utilizes the device and AFAIR if you have multihead GPU, > you could have more than one screens with more than one monitors and define > there whatever acceptable displays you can define. >
X11 terminology is complex and bloated with 30 years old poorly named abstractions. I suggest to read this : https://wiki.archlinux.org/index.php/Multihead Especially funny is that term "display" has different meaning in xorg.conf (screen's width and depth) and X11 protocol (collection of screens: DISPLAY=display.screen) Nowadays you should have: * One screen and one display (DISPLAY=:0.0) unless you do something rare like Zaphod mode. * Use randr (either directly or with tools provided by your DE) to configure each monitor as different output RandR solves most issues. Other approaches are outdated: Xinerama requires manual configuration and doesn't support different resolutions without of "dead zones" "Several screens" (original X solution) does not allow you to move windows between them (except several carefully written apps)
