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--- linux:x:monitororder [2023/03/04 08:42] – olaf
+++ linux:x:monitororder [2025/08/31 13:11] (current) – Added difference X11 Wayland olaf
@@ Line 1: / Line 1: @@
 ===== Multiple monitor setup correct login screen order =====
-In a multi-monitor configuration, the order of the monitors might be different on the logon screen and KDE Plasma (Wayland).
+In a multi-monitor configuration, the order of the monitors might be different on the logon screen and KDE Plasma (Wayland).\\
-To correct this first find the configuration on the desktop:
+The configuration in Debian 13 Trixie is even a little more tricky:\\
-<code bash>xrandr |grep connected</code>
+while SDDM is running in a X11 session, you might want to run the desktop session in Wayland.\\
-<code>DisplayPort-0 connected primary 3840x1600+3840+177 (normal left inverted right x axis y axis) 880mm x 367mm
+xrandr might use different output device names in X11 and Wayland.\\
-DisplayPort-1 connected 3840x2160+0+0 (normal left inverted right x axis y axis) 607mm x 345mm
-DisplayPort-2 disconnected (normal left inverted right x axis y axis)
+== X11 ==
-HDMI-A-0 disconnected (normal left inverted right x axis y axis)</code>
-DisplayPort-0 is the right monitor\\
-DisplayPort-1 is the left monitor\\
-DisplayPort-2 and HDMI-A-0 are not connected\\
-This information can be used to correct the SDDM configuration in ''/usr/share/sddm/scripts/Xsetup''. At the end of the script add:
 <code bash>
-xrandr --output DisplayPort-2 --off --output HDMI-A-0 --off
+xrandr | grep -w connected
-xrandr --output DisplayPort-1 --mode 3840x2160 --pos 0x0 --rotate normal --output DisplayPort-0 --mode 3840x1600 --pos 3840x177 --rotate normal </code>
+DP-2 connected 2560x1440+0+0 (normal left inverted right x axis y axis) 600mm x 340mm
+DP-4 connected primary 3440x1440+2560+0 (normal left inverted right x axis y axis) 797mm x 333mm
+</code>
+== Wayland ==
+<code bash>
+xrandr | grep -w connected
+DP-2 connected 2560x1440+0+0 (normal left inverted right x axis y axis) 600mm x 340mm
+DP-3 connected primary 3440x1440+2560+0 (normal left inverted right x axis y axis) 797mm x 333mm
+</code>
+To correct the monitor configuration first find the configuration on the desktop, but ensure you started the desktop session with Plasma (X11) not Plasma (Wayland).
+Open a bash as user and run:
+<code bash>
+xrandr | grep -w connected
+</code>
+<code>
+DP-2 connected 2560x1440+0+0 (normal left inverted right x axis y axis) 600mm x 340mm
+DP-4 connected primary 3440x1440+2560+0 (normal left inverted right x axis y axis) 797mm x 333mm
+</code>
+DP-2 is the left monitor\\
+DP-4 is the right monitor\\
+This information can be used to correct the SDDM configuration in ''/usr/share/sddm/scripts/Xsetup''. At the end of the script add:
+<code bash>
+xrandr --output DP-2 --mode 2560x1440 --pos 0x0 --rotate normal --output DP-4 --mode 3440x1440 --pos 2560x0 --rotate normal
+</code>
+Ensure /etc/sddm.conf.d/kde_settings.conf and /etc/sddm.conf contain:\\
+<code bash>
+[X11]
+Xsetup=/usr/share/sddm/scripts/Xsetup
+</code>

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