Re: ACPI and kernel 2.6.9-1.6.FC2

From: Nifty Hat Mitch (mitch48_at_sbcglobal.net)
Date: 12/10/04

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    Date: Thu, 9 Dec 2004 18:55:09 -0800
To: For users of Fedora Core releases <fedora-list@redhat.com>

    On Fri, Dec 03, 2004 at 11:02:01PM -0500, Lo Cal wrote:
    > Date: Fri, 3 Dec 2004 23:02:01 -0500
    > From: Lo Cal <remaker359@gmail.com>
    > To: For users of Fedora Core releases <fedora-list@redhat.com>
    > Subject: Re: ACPI and kernel 2.6.9-1.6.FC2
    > Reply-To: Lo Cal <remaker359@gmail.com>,
    > For users of Fedora Core releases <fedora-list@redhat.com>
    >
    > I just fix the same problem on my machine using "apci=ht" in grub
    > kernel line. I'm using an all AMD system....don't know if ht means
    > halt, hyper threading or something else. Try it and see if it works
    > for you.

    This is equivalent to apci=off on an AMD processor box (should be
    equivalent). It enables apci only long enough to toggle
    hyperthreading on. After hyperthreading would be on apci is shut of
    and the older power management software/ tool is used.

    There seems to be some race condition involving the ACPI Interpreter
    and the kernel ... where the shutdown sequence gets FUBAR. 

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