Comment 93 for bug 57872

 >> ps axuw | grep hal
110 8665 0.0 0.1 6084 4160 ? Ss Apr01 0:12 /usr/sbin/hald
root 8673 0.0 0.0 3344 1172 ? S Apr01 0:01 hald-runner
root 8776 0.0 0.0 3436 1316 ? S Apr01 0:00 hald-addon-input: Listening on /dev/input/event7 /dev/input/event1 /dev/input/event12 /dev/input/event4 /dev/input/event5 /dev/input/event6 /dev/input/event13 /dev/input/event3
root 8780 0.0 0.0 3420 1224 ? S Apr01 0:00 /usr/lib/hal/hald-addon-cpufreq
110 8781 0.0 0.0 2204 944 ? S Apr01 0:00 hald-addon-acpi: listening on acpid socket /var/run/acpid.socket
root 8839 0.0 0.0 3412 1136 ? S Apr01 0:00 hald-addon-storage: no polling on /dev/scd0 because it is explicitly disabled

 >> ps axuw | grep dbus
barteq 4783 0.0 0.0 2696 1092 ? Ss 03:38 0:00 dbus-daemon --fork --print-address 24 --print-pid 26 --session
107 8364 0.0 0.0 2952 1524 ? Ss Apr01 0:14 /usr/bin/dbus-daemon --system
barteq 10566 0.0 0.0 2700 1136 ? Ss Apr01 0:00 dbus-daemon --fork --print-address 24 --print-pid 26 --session
dhcp 10828 0.0 0.0 2436 1176 ? S Apr01 0:00 /sbin/dhclient -1 -lf /var/lib/dhcp3/dhclient.wlan0.leases -pf /var/run/dhclient.wlan0.pid -q -e dhc_dbus=31 -d wlan0

It seems that this key is unhandled by something below like acpi (don't know exaclty what is responsible for powerbutton).
Using xev command there is no activity when hitting this button. Any other 'special' keys works fine.

Maybe there is a module missing? Don't know.. lsmod attached below.