On Mon, 2007-03-12 at 12:28 +0100, antonio montagnani wrote: > maybe I was not very clear. > I usually shutdown the machine by System/Stop where you have the > Re-start/Clear/Stop options. I don't see options with those particular names. You might want to tell us whether you're doing that from within a logged in session (KDE, Gnome, etc.), or the login screen (GDM, KDM, etc.). > If I push the Stop button the system should stop, but many times I > have to rerun procedure In what way are you re-running things? It does nothing, and you simply pick the same option? It reboots, and you tell it to shutdown again? Something else? I found that one of my boxes, long ago, wouldn't do a power off until I played around with BIOS options regarding APM/ACPI and also playing with kernel parameters. See the kernel docs for information about the "acpi" or "apm" choices available to you. Any parameters you use are placed on the kernel line when you bootup Linux (edit your GRUB menu items, temporarily, using the hotkeys available to you at bootup; or edit them permanently in the grub.conf file - you can add new entries with different parameters with the same kernel). See: /usr/share/doc/kernel*/Documentation/kernel-parameters.txt And from one of my /boot/grub/grub.conf files: title Fedora Core (2.6.17-1.2142_FC4) root (hd0,0) kernel /vmlinuz-2.6.17-1.2142_FC4 ro root=LABEL=/ acpi=force initrd /initrd-2.6.17-1.2142_FC4.img Notice that I've had to add acpi=force to get ACPI to do its tricks on this PC. -- (This PC runs FC4, my others FC5 & FC6, in case that's important to the thread) Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists.