Re: ACPI and kernel 2.6.9-1.6.FC2

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On Fri, 03 Dec 2004 23:56:28 -0500, Jim Cornette
<fc-cornette@xxxxxxxxxxxxxx> wrote:
> Lo Cal wrote:
> > 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.
> >
> 
> I tried adding the option earlier and had no positive results. I did
> grab the kernel for FC2 from the OS directory and installed this
> version. The results were that the computer would shutdown and poweroff
> with the kernel-2.6.5-1.358. This isolates the problem specifically to
> the kernel and not to other operating system functions. Also, since my
> computer is not that old and the BIOS was upgraded with a version from
> April 2004, the code in BIOS should conform to whatever caused the
> breakage for ACPI power-off. An option for acpi=power-off-legacy should
> be added to the kernel, if these BIOS settings do not conform to the new
> linux kernel or industry standards. I guess HP should unbreak the BIOS
> for acpi power-off also.Thanks for the acpi=ht suggestion. acpi
> power-off is all that is noticably broken. We need some option that
> addresses this problem specifically.
> 
> Thanks,
> 
> Jim

An option for that would be another work around, nicer than disabling
acpi all together.  The real issue is something being broken, though,
or at least it seems that way.  It works for kernels through the 2.6.8
kernel (you should really use 2.6.8, not 2.6.5), and then breaks in
the 2.6.9 series on some machines.  Whatever changed in the
acpi_power_off function (I think that is the one that announces it was
called when it should power off) should be looked at.  The change
seems to have done more harm than good, so perhaps it should be
changed back.

Jonathan


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