• su

• echo 'event=button/lid.*' >> /etc/acpi/events/lm_lid

• echo 'action=/etc/acpi/lid.sh' >> /etc/acpi/events/lm_lid

• Find out your session type: $XDG_SESSION_TYPE

• vi /etc/acpi/lid.sh:

  Change USERNAME to your username (whoami)

  X11:

  #!/bin/bash
  grep -q close /proc/acpi/button/lid/*/state
  if [ $? = 0 ]
  then
    # Close action
    sleep 1
    su -c  "xset -display :1 dpms force off" - USERNAME
  else
    # Open action
    su -c  "xset -display :1 dpms force on &> /tmp/screen.lid" - USERNAME
  fi
  

  If not working, replace :1 with the output of echo $DISPLAY

  Wayland:

  #!/usr/bin/env bash
  grep -q close /proc/acpi/button/lid/*/state
  if [ $? = 0 ]
  then
    # Close action
    sleep 1
    su -c "busctl --user set-property org.gnome.Mutter.DisplayConfig /org/gnome/Mutter/DisplayConfig org.gnome.Mutter.DisplayConfig PowerSaveMode i 1" - USERNAME
  else
    # Open action
    su -c "busctl --user set-property org.gnome.Mutter.DisplayConfig /org/gnome/Mutter/DisplayConfig org.gnome.Mutter.DisplayConfig PowerSaveMode i 0" - USERNAME
  fi
  

• chmod +x /etc/acpi/lid.sh

• /etc/init.d/acpid restart

---

Tested on

• Ubuntu 18.04