Don't work power off from BMC and button, only "hard" shutdown via long press power button. But "init 0" works. server - supermicro, MB X9DBL-iF cat /etc/centos-release CentOS release 6.6 (Final) in boot log ... udev: starting version 147 shpchp: Standard Hot Plug PCI Controller Driver version: 0.4 ACPI Warning: SystemIO range 0x0000000000000428-0x000000000000042f conflicts with OpRegion 0x0000000000000400-0x000000000000047f (\PMIO) (20090903/utaddress-254) ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000053f conflicts with OpRegion 0x000000000000052c-0x000000000000052c (\GINV) (20090903/utaddress-254) ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000053f conflicts with OpRegion 0x0000000000000500-0x000000000000051f (\GPIO) (20090903/utaddress-254) ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000053f conflicts with OpRegion 0x000000000000050e-0x000000000000050e (\_SB_.PCI0.HEC2.GPO2) (20090903/utaddress-254) ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver lpc_ich: Resource conflict(s) found affecting gpio_ich
acpidump and dmesg please: # acpidump > acpidump.txt Also, we don't support vendor specific kernels here, so please try an upstream kernel. You can use the following to decide if power button event has occured: sudo systemctl status systemd-logind If your system doesn't use systemd, please use acpi_listen instead.