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I have my IR receiver connected to the physical power button for turning on and there's a separate remote button for turning off. How to disable the power on button from shutting down the computer?

In previous Ubuntu versions I have edited /etc/acpi/powerbtn.sh but now it has now effect. My /etc/acpi/powerbtn.sh and /etc/acpi/events/powerbutton both are symlinked to /bin/false and still the power button works.

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Edit/add the following line to /etc/systemd/logind.conf

HandlePowerKey=ignore

Some more details here: How to prevent the Power button to shutdown directly the system?

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