Getting LightDM to use a custom screen layout (Xubuntu 17.10 – xorg)

By , 2018-04-23 12:55
  1. Adjust screen layout using your DE’s tool.
  2. Install and run arandr. arandr will read the current display layout and allow you to save it as an xrandr script.
  3. Place the script from arandr somewhere safe (I put it in /usr/local/bin).
  4. Create file /etc/lightdm/lightdm.conf.d/displays.conf with the following content:
    [SeatDefaults]
    display-setup-script=/usr/local/bin/monitorlayout.sh
    Where "/usr/local/bin/monitorlayout.sh" is the path to the script saved from arandr.
  5. Restart lightdm
    sudo systemctl restart lightdm.service

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