How to set up dual screen display on Linux?

1 year ago
Isabella Edwards
2 minutes

In Linux systems, setting up dual screen display usually requires using either the graphical interface or the command line. Here are some common methods:

  1. Setting up using graphical interface: In most Linux distributions, you can configure dual screen display through system settings or display settings. You can usually find options like “multiple monitors” or “display layout” in the display settings, where you can choose between extended display or mirrored display, and adjust parameters such as screen position and resolution.
  2. Configure using the command line: In certain situations, the xrandr command line tool can be used to set up dual screen display. You can use the following command to list all connected monitors and their supported resolutions:
xrandr

Then use the following command to configure dual screen display, for example extending the second monitor to the right of the main display:

xrandr --output HDMI-1 --auto --right-of HDMI-2

HDMI-1 and HDMI-2 are identifiers for the monitor, which can be found in the output of xrandr.

  1. The configuration file located at /etc/X11/xorg.conf.
Section "Monitor"
    Identifier "Monitor1"
    Option "Enable" "true"
EndSection

Section "Monitor"
    Identifier "Monitor2"
    Option "Enable" "true"
    Option "RightOf" "Monitor1"
EndSection

The display identifier and position relationship need to be modified based on the specific situation.

No matter which method is used, when setting up a dual screen display, it is important to ensure that the monitors are connected correctly, and that the resolution and refresh rate settings supported by the monitors are accurate to avoid any display abnormalities or compatibility issues.

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