ACPI power button events

Hi,

Is pressing the power button on a Big Sur workstation supposed to write anything to /proc/acpi/event? It doesn't seem to on my system.

Hi,

Quoted 4 lines · On Mon, 14 Jan 2002 15:01:24 -0800 Michael Madore <[email protected]>…

Hi,

Is pressing the power button on a Big Sur workstation supposed to write anything to /proc/acpi/event? It doesn't seem to on my system.

I tested the same and got the same result.
I suppose BigSur doesn't support the button feature in its firmware.

If it does, you should see "ACPI: Power Button (FF) found" in boot message and you will see a /proc/acpi/button directory.

If the button event is properly processed, you can see "button power 00000080 00000000"
line when you cat /proc/acpi/event.

Quoted 9 lines

Quoted 2 lines

Is pressing the power button on a Big Sur workstation supposed to write anything to /proc/acpi/event? It doesn't seem to on my system.

I tested the same and got the same result.
I suppose BigSur doesn't support the button feature in its firmware.

If it does, you should see "ACPI: Power Button (FF) found" in boot message and you will see a /proc/acpi/button directory.

Yes, I see this message upon boot, and the /proc/acpi/button directory is created.

Quoted 3 lines

If the button event is properly processed, you can see "button power 00000080 00000000"
line when you cat /proc/acpi/event.

Nothing seems to get written to the event file.