desktop-config/.config/xfce4/xfconf/xfce-perchannel-xml/displays.xml

<?xml version="1.1" encoding="UTF-8"?>

<channel name="displays" version="1.0">
  <property name="ActiveProfile" type="string" value="Default"/>
  <property name="Notify" type="int" value="1"/>
  <property name="AutoEnableProfiles" type="int" value="3"/>
  <property name="Default" type="empty">
    <property name="DisplayPort-2" type="string" value="Philips 24&quot;">
      <property name="Active" type="bool" value="true"/>
      <property name="EDID" type="string" value="c0551da2a32e70a642e3bc4db9f0978b258e4fac"/>
      <property name="Resolution" type="string" value="1920x1080"/>
      <property name="RefreshRate" type="double" value="60"/>
      <property name="Rotation" type="int" value="0"/>
      <property name="Reflection" type="string" value="0"/>
      <property name="Primary" type="bool" value="false"/>
      <property name="Scale" type="double" value="1"/>
      <property name="Position" type="empty">
        <property name="X" type="int" value="1920"/>
        <property name="Y" type="int" value="0"/>
      </property>
    </property>
    <property name="HDMI-A-3" type="string" value="LG 22&quot;">
      <property name="Active" type="bool" value="true"/>
      <property name="EDID" type="string" value="85b3fa93f4ab29d107ac0997315dfc88d705a330"/>
      <property name="Resolution" type="string" value="1920x1080"/>
      <property name="RefreshRate" type="double" value="60"/>
      <property name="Rotation" type="int" value="0"/>
      <property name="Reflection" type="string" value="0"/>
      <property name="Primary" type="bool" value="true"/>
      <property name="Scale" type="double" value="1"/>
      <property name="Position" type="empty">
        <property name="X" type="int" value="0"/>
        <property name="Y" type="int" value="0"/>
      </property>
    </property>
  </property>
</channel>