systemd-shim executes 'poweroff' after resuming from suspend-to-memory(S3)

update 2015 05 16
It seems that, dbus-deamon has received a poweroff meesage then it fork the systemd-shim to shutdown the system, here's the backtrace for systemd-shim . we can see that ,dbus-daemon --system --fork leverage systemd-shim to perform the poweroff.
however, who sends the poweroff message to dbus-daemon???

init
  |-ModemManager
  | `-2*[{ModemManager}]
  |-NetworkManager
  | |-dhclient -d -sf /usr/lib/NetworkManager/nm-dhcp-client.action -pf ...
  | |-dnsmasq --no-resolv --keep-in-foreground --no-hosts --bind-interfaces--pid-file=/run/sendsigs.omit.d/network-manager.dnsm
  | `-3*[{NetworkManager}]
  |-acpid -c /etc/acpi/events -s /var/run/acpid.socket
  | `-sh -c /etc/acpi/powerbtn.sh
  | `-powerbtn.sh /etc/acpi/powerbtn.sh
  |-avahi-daemon
  | `-avahi-daemon
  |-bluetoothd
  |-cron
  |-cups-browsed
  |-cupsd -f
  | `-dbus dbus://
  |-dbus-daemon --system --fork
  | `-dbus-daemon --system --fork
  | `-systemd-shim /usr/lib/x86_64-linux-gnu/systemd-shim
  | `-pstree -a
  |-getty -8 38400 tty4
  |-getty -8 38400 tty5
  |-getty -8 38400 tty2
  |-getty -8 38400 tty3
  |-getty -8 38400 tty6
  |-irqbalance
  |-kerneloops
  |-login --
  | `-bash
  | `-sudo -s
  | `-bash
  |-polkitd --no-debug
  | `-2*[{polkitd}]
  |-rsyslogd
  | `-3*[{rsyslogd}]
  |-sshd -D
  |-systemd-logind
  |-systemd-udevd --daemon
  | |-systemd-udevd --daemon
  | |-systemd-udevd --daemon
  | |-systemd-udevd --daemon
  | |-systemd-udevd --daemon
  | |-systemd-udevd --daemon
  | |-systemd-udevd --daemon
  | |-systemd-udevd --daemon
  | |-systemd-udevd --daemon
  | |-systemd-udevd --daemon
  | |-systemd-udevd --daemon
  | `-systemd-udevd --daemon
  |-upstart-file-br --daemon
  |-upstart-socket- --daemon
  |-upstart-udev-br --daemon
  `-whoopsie
      `-2*[{whoopsie}]

I have same behavior on debian jessie
it's occurs only where resume from ram..but not if resume from disk (hibernate)

i try to insolae the problem. i start with mate-power-manager (from mate-desktop):
https://github.com/mate-desktop/mate-power-manager/issues/140
But seems that it's not their fault

i think that when resume pressing the powerbutton , its wakeup the machine but also send the poweroff event that poweroff the machine after 20 or 30 seconds.

I have a very similar problem, but my laptop doesn't go through /sbin/shutdown: it turns off abruptly as if I had pulled the power plug. Always after 1 minute exactly.

I'd like to investigate this, if anyone has any idea what to try please tell me. I suspect it is related to Intel Rapid Start, but I already deactivated it in the bios.

Yes, exactly same behavior as @raff comment.

The iRst are disabled or enabled do not solved it.
Also, i do not have systemd-shim package installed on my debian (actual stretch)

Another behavior that i think are realated to this issue at my machine are:

if i poweroff (shutdown command or touch the porwer button) and the AC adapter IS connect.. the computer reboot 2 or 3 seconds after the system poweroff.

If the AC adacte is DIsconnected the computer power off as expected.

yes, i known that is another bug, but i can bet a beer that is related.

I still have this issue on debian stretch.

Did someone fix it?