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    SubjectACPI power off requires swsusp (was: Re: Power off a SMP Box)
    On Tue, 7 Jan 2003, Pavel Machek wrote:

    > > > You could try ACPI in (very) recent kernels.
    > >
    > > You mean a 2.5.x kernel? Any Kernel with the newest ACPI patches has never powered off any of my machines:-(
    > > Perhaps I don't know something...
    > > I will try it now again...
    > You can also get new ACPI for 2.4.X (at and even ACPI in
    > marcelo's kernel should be good enough for poweroff.

    I just disovered that in 2.5.56 (at least), ACPI power-off needs
    CONFIG_ACPI_SLEEP which depends on CONFIG_SOFTWARE_SUSPEND. This means
    that without selecting software suspend, your machine cannot power off
    using ACPI. Why is it so?


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