Now you have your regular desktop spanning multiple monitors, it would be better if a user's personal initialisation file is ~/.xinitrc.system-wide initialisation file is /etc/X11/xinit/xinitrc.Note: This will only work if X is started manually, not from a display manager such as gdm, sddm, slim or whatever. Execution of the command is usually quite noticeable as the monitors change from the basic cloned, landscape display to the independent portrait mode. Add a line after the window manager has been started but before any applications are called. There are different locations for saving initialisation commands and indeed some Settings tools can add these commands in place for you.Īdd the command to either to individual or system xinitrc scripts. Your system can then be configured to call this script as you login to your account as your window manager starts. Save it somewhere useful /usr/local/bin perhaps. If you have not done so already, create a simple batch script containing your desired xrandr command. DVI-0 sits immediately to the right of VGA-1 -output DVI-0 -pos 1080x0.DVI-0 is also rotated -output DVI-0 -rotate left.VGA-1 is the main display, the position of other monitors will be measured relative to its top, left corner -output VGA-1 -pos 0x0.VGA-1 is rotated 90 counter-clockwise from landscape to portrait -output VGA-1 -rotate left.Both monitors are identical (with a resolution of 1920x1080) and can rotate or pivot from a landscape to a portrait orientation.
These names can be determined using the command xrandr -q or even searching through the X.org log-file /var/log/Xorg.0.log. I have two monitor devices with the logical names VGA-1 and DVI-0. $ xrandr -output VGA-1 -rotate left -output VGA-1 -pos 0x0 -output DVI-0 -rotate left -output DVI-0 -pos 1080x0 The DualScreen and xrandr pages, the man page and various locations on the web provide more information on using the tool.įor example, the following command configures my dual monitor set-up: Use xrandr to experiment with different configurations until you arrive at settings you want to make permanent. This may already installed as part of your Xorg installation from either the xorg or xorg-apps groups. The best tool to experiment with configuring your monitors to display as you want is xrandr.
If all the monitors are not exactly the same shape or support different resolutions you may only see portions of the main desktop display. The desktop is "cloned" on to the secondary monitors. When everything is on you should see the same output on each monitor.
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This document describes how to configure such a system. It is even possible to join the displays from several computers - each with single or multiple monitors - into one very large extended desktop. It is also possible to have these multiple monitors work together as an extended single desktop. In some cases this is exactly what is required allowing the same desktop to be viewed from different directions. If you plug in multiple monitors to whatever video sockets you have available, they will more often than not "just work" - offering two or more versions of the same display. Nowadays, most laptops come with a main display and a socket for an external monitor while the integrated video cards on desktop systems provide VGA + DVI + HDMI outputs as standard. Then some high-end video cards began appearing with outputs for two monitors. Many years ago this was only possible by installing two or more video cards in a computer. Several monitors can be attached to a single computer system. (Discuss in Talk:Extreme_Multihead#Multihead_Consolidation) Notes: only a specific case of Multihead.
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