>>>>> "Xavier" == Xavier BLANADET <xavier.blanadet@xxxxxxxxxxxxx> writes: Xavier> Hi, Sorry for repeating the post, but I had no answer. Xavier> I'm using a 2.4-18smp kernel (two P4 at 2.4GHz on a X5DA8 Xavier> Supermicro Motherboard) and I cannot complete the power off. It Xavier> stands by on the message "Power down." and nothing more. Xavier> After reading some posts about this, I've added "apm=power-off" to Xavier> kernel command line, but it did nothing more. My understanding is that the code implementing APM is not SMP-safe. When the kernel determines that it's running on an SMP box, it disables APM. It's been a while, but I recall seeing a message about this being displayed as the system is booted; you should be able to use dmesg to see it... Ed -- Ed Bailey Red Hat, Inc. http://www.redhat.com/ -- Psyche-list mailing list Psyche-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/psyche-list