On Sun, 17 Oct 2004, Tetsuo Handa wrote: >The PC is IBM's BladeCenter, with HyperThreading and ACPI support, >but no APM support ( the kernel says "apm: BIOS not found." ). >I tried both UP and SMP kernel configurations. This is on different hardware, but I found when upgrading to recent RedHats that the kernel argument "acpi=off" made /sbin/poweroff work. Google has plenty of suggestions if you ask for "linux acpi poweroff". Cheers, Phil