If we don't want to introduce UI for that in lightdm, we can also adjust /etc/acpi/power.sh (or rather CheckPolicy() in /usr/share/acpi-support/policy-funcs) to just shut down the machine if you press the power button.
If we don't want to introduce UI for that in lightdm, we can also adjust /etc/acpi/power.sh (or rather CheckPolicy() in /usr/share/ acpi-support/ policy- funcs) to just shut down the machine if you press the power button.