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The Shokz dongle emits KEY_POWER press without a matching release on
USB disconnect; logind classified that as a long-press after 5s and
fired HandlePowerKeyLongPress=poweroff (confirmed in journal: 'Power
key pressed long. Powering off...').
There is no policy that distinguishes 'real 5s hold of power button'
from 'misbehaving device that never sends release'. Ignore both.
Clean shutdowns now require systemctl poweroff or GUI menus; a very
long hold of the physical power button still force-offs via firmware.
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The drop-in is generic policy, not tied to one device. Reword the
comment to reflect that any USB device emitting spurious KEY_POWER
(headsets, KVM switches, cheap keyboards) is covered.
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The Shokz OpenMeet dongle (3511:2EF2) emits KEY_POWER on USB
enumeration and on headset power transitions, which logind handles
with HandlePowerKey=poweroff and immediately shuts the host down.
The previous attempt — an hwdb scancode remap of c0030 to reserved —
sets the udev property correctly but the kernel does not honor
EVIOCSKEYCODE for this device's HID consumer-page mapping (verified:
KEY_POWER 116 still appears in the evdev keymap after udevadm trigger
and libinput still reports it). Drop the hwdb file and the
systemd-hwdb hooks from the etc deploy script.
Replace with a logind drop-in that sets HandlePowerKey=ignore and
HandlePowerKeyLongPress=poweroff. Single-tap power events from any
source become no-ops; a 5s hold still shuts the machine down, so the
real hardware-power-button safety net is preserved. Add a HUP to
systemd-logind in the deploy script so the change takes effect
without restarting the daemon.
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sommerfeld