I tryed the manipulation pointed by Roax : "echo 5 > /proc/acpi/sleep"
It produced the same result than with "power off", the machine goes down, the HDD drives are stopping down, but at the end the power remains and the motherdoard start to beep. no success here, the mystery remains. -- System does not power off on shutdown https://launchpad.net/bugs/36158 _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla