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Wayland Looks To Do Multi-Monitor The Right Way

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  • Wayland Looks To Do Multi-Monitor The Right Way

    Phoronix: Wayland Looks To Do Multi-Monitor The Right Way

    Two weeks ago the hot discussion item being talked about by those interested in the Wayland Display Server was how to handle input with Wayland (e.g. using X Input, create a separate "Inland" input project, or designing something entirely different). The new subject now brought up on the Wayland mailing list is how to handle multiple monitor support. Fortunately, it looks like Kristian plans to implement multiple monitor/display support in a different -- and better -- way than how it's dealt with by the X.Org Server...

    http://www.phoronix.com/vr.php?view=OTA5Mg

  • #2
    Does these mean they will avoid the annoying issue that X11 has with mice getting lost in invisible areas in multi-monitor setups (like when you have monitors of different resolutions)?

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    • #3
      Originally posted by TheBlackCat View Post
      Does these mean they will avoid the annoying issue that X11 has with mice getting lost in invisible areas in multi-monitor setups (like when you have monitors of different resolutions)?
      http://lists.freedesktop.org/archive...ry/019108.html

      Comment


      • #4
        How is this better? There's nothing preventing an X11 driver from doing exactly the same thing to implement RandR's multi-screen support.

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        • #5
          Sweet. Now if only GNOME, KDE, XFCE, E, or any other Linux desktop actually managed to use multi-monitor desktops properly. It seems all of them want to treat your desktop as a single spanned display with maybe some half-assed thought put into limiting the panel to a single display. New windows are just as likely to pop up on your secondary, head-craning-required, not-even-turned-on display as they are to appear on the main display (in which the action that caused the window to open took place). Desktop icons are usually sorted to the wrong place. The desktop bars default to left-most monitors usually. Hell, GDM is even so ****ing stupid as to place the greeter window and panel on whichever monitor the cursor is currently on, including a "race condition" that allows the greeter to show up on one display and the panel to show up on another.

          Meanwhile, WinXP and Win7 both Just Work(tm) exactly the way you'd expect things to.

          I don't get it. Multiple monitors are practically a necessity for many programming tasks, particularly those that deal with the whole desktop. How come nobody in the Linux desktop world has bothered to implement support for them properly?

          Oh, and just to top it off, the Linux r600 driver lists my displays in reverse order of Windows, so whenever I change OSes I need to swap cables to get the monitor that's actually in front of my face to be the primary display. Lovely.

          </rant>

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          • #6
            Originally posted by elanthis View Post
            Sweet. Now if only GNOME, KDE, XFCE, E, or any other Linux desktop actually managed to use multi-monitor desktops properly. It seems all of them want to treat your desktop as a single spanned display with maybe some half-assed thought put into limiting the panel to a single display.
            I use xfce. The panel has options to span over two monitors (though only useable, when the lower bounds of the display are aligned), or limiting it to each monitor.
            What do you expect more?

            Originally posted by elanthis View Post
            New windows are just as likely to pop up on your secondary, head-craning-required, not-even-turned-on display as they are to appear on the main display (in which the action that caused the window to open took place).
            For me new windows appear on the display the mouse pointer is currently on.

            Originally posted by elanthis View Post
            Desktop icons are usually sorted to the wrong place.
            They are just staying where they are on the primary monitor.

            Originally posted by elanthis View Post
            The desktop bars default to left-most monitors usually.
            To the primary monitor? Is that a bad default?

            Originally posted by elanthis View Post
            Hell, GDM is even so ****ing stupid as to place the greeter window and panel on whichever monitor the cursor is currently on, including a "race condition" that allows the greeter to show up on one display and the panel to show up on another.
            Hm.

            Originally posted by elanthis View Post
            Meanwhile, WinXP and Win7 both Just Work(tm) exactly the way you'd expect things to.
            My xfce does also.

            Originally posted by elanthis View Post
            I don't get it. Multiple monitors are practically a necessity for many programming tasks, particularly those that deal with the whole desktop. How come nobody in the Linux desktop world has bothered to implement support for them properly?
            They are?

            Originally posted by elanthis View Post
            Oh, and just to top it off, the Linux r600 driver lists my displays in reverse order of Windows, so whenever I change OSes I need to swap cables to get the monitor that's actually in front of my face to be the primary display. Lovely.
            Code:
            xrandr --output XXX --primary

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            • #7
              When was the last time you used KDE? For me KDE always opens windows on the same monitor as the mouse, and has for at least several releases. This is an option, you can change it, but I am pretty sure that is the default.

              Further, the two screens have entirely separate desktops, with independent icons, widgets, wallpapers, even the desktop type can be different. It possible, even in theory, for icons to shift from one desktop to the other.

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              • #8
                Sorry, that should be "impossible, even in theory, "

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                • #9
                  What a coincidence. I am glad this problem is finally getting some attention.

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                  • #10
                    Originally posted by TheBlackCat View Post
                    When was the last time you used KDE? For me KDE always opens windows on the same monitor as the mouse, and has for at least several releases. This is an option, you can change it, but I am pretty sure that is the default.

                    Further, the two screens have entirely separate desktops, with independent icons, widgets, wallpapers, even the desktop type can be different. It possible, even in theory, for icons to shift from one desktop to the other.
                    Yes. Since at least KDE 4.4 when I started with multi-monitor, Kwin will open an application on the "active" monitor, which is where your last mouse click was.

                    This is actually far better than Windows XP is, which launches applications wherever it wants, and in no consistent size or location (much less customizable).

                    I currently use the Nvidia driver and KDE SC 4.6.0, and I don't have any complaints.

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                    • #11
                      Originally posted by elanthis View Post
                      New windows are just as likely to pop up on your secondary, head-craning-required, not-even-turned-on display as they are to appear on the main display (in which the action that caused the window to open took place).
                      I dont like it either that new windows pop up wherever the mouse pointer currently is.
                      It makes you wait for slow-to-start programs to show their stupid window to avoid them popping up when you do other stuff in the meantime.
                      Hell, GDM is even so ****ing stupid as to place the greeter window and panel on whichever monitor the cursor is currently on, including a "race condition" that allows the greeter to show up on one display and the panel to show up on another.
                      The default display settings for gdm are fucked up. If they have a default for primary monitor, why showing greeter where the mouse is, which is in the middle, which depending on the widths of your monitor might end up on the wrong monitor (like in my case)?
                      Then comes the fucked up resolution, that is totally not the sane value you chose in DisplayPreferences for your desktop.
                      Now this becomes really FUBAR when you decide to rotate one of your screens. GDM is of course not rotated, so you might end up with the greeter window on the rotated screen.
                      Why is it so hard to change settings for the gdm screen? Why not "apply for gdm screen" checkbox in Display Preferences aka gnome-display-properties (another fuck up, the naming).
                      There is no much small things to fix in gnome2 and they waste time on that (probably useless) gnome3 thing.

                      Oh, and just to top it off, the Linux r600 driver lists my displays in reverse order of Windows, so whenever I change OSes I need to swap cables to get the monitor that's actually in front of my face to be the primary display. Lovely.
                      </rant>
                      Sorry, but that's just retarded. I mean you. Not only can you place the screens using xrandr, you can do that in Display Preferences.

                      Comment


                      • #12
                        Originally posted by md1032 View Post
                        How is this better? There's nothing preventing an X11 driver from doing exactly the same thing to implement RandR's multi-screen support.
                        Yes, I'm no specialist, but this should be implementable in X (one surface per screen to avoid hitting the render area limitations).

                        Comment


                        • #13
                          I run E16 (sometimes play with E17) - that's rather well suited to dual monitors (or more I suppose). No xinerama though - I prefer running two instances of X. Still, it works like a charm, don't have any issues at all.

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                          • #14
                            Originally posted by mirv View Post
                            I run E16 (sometimes play with E17) - that's rather well suited to dual monitors (or more I suppose). No xinerama though - I prefer running two instances of X. Still, it works like a charm, don't have any issues at all.
                            Two instances of X? How does it work, can you have a spanning desktop? can you move windows between monitors?

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                            • #15
                              Originally posted by misiu_mp View Post
                              Two instances of X? How does it work, can you have a spanning desktop? can you move windows between monitors?
                              No - windows are constrained to the monitor they're created on. Some programs support this kind of setup (gimp, for instance), but they're not common.
                              It's not for everybody - I have no particular use for dragging windows across monitors (no reason - just tend to keep things where they are), and I doubt such a setup would play as nice with GNOME, KDE, etc, but for me it's so useful now that I wouldn't want it any other way. It also has no issue with different monitor resolutions.

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