Explanation of systemd-logind in Auth.log

Question

Im seeing the following line in my Auth.log file

systemd-logind[761]: Power key pressed.

Can this be triggered any other way(script, error, panic)? I ask because unless my cat has become smart enough to press the power button then I think it's being triggered elsewhere.

Does this only show if the physical power button is pressed, or could it be being triggered elsewhere?

Update-

sudo udevadm trigger -v -n -g power-switch
/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input2/event2
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input0/event0
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input1/event1

Answer 1

The message is shown under exactly one condition: one of the devices under /dev/input has sent a KEY_POWER or KEY_POWER2 event, and yes, systemd-logind receives those directly from the kernel without any external "triggers".

Though, this could also include the "Power" buttons on regular keyboards as well as some kinds of remote controls. Use udevadm to find out which devices are being monitored for this kind of event:

$ udevadm trigger -v -n -g power-switch
/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input7/event3
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:00/LNXVIDEO:00/input/input8/event4
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input5/event1
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input6/event2

$ udevadm trigger -v -n -g power-switch | xargs -i cat {}/../name
Power Button
Video Bus
Lid Switch
Sleep Button

Also: Do not underestimate cats.