Re: "processor" acpi module permanently throttles processor
On 11/06/2006 03:30 PM, Owen Heisler wrote:
> An old laptop I have supports ACPI, but when I use ACPI, the processor
> becomes very slow. Without ACPI enabled, it runs fine.
>
> With ACPI on, /proc/acpi/processor/CPU0/throttling (I think that's
> right) shows 8 states, with the highest one active. The highest one
> is not 100% though, rather 80% or so. The way it runs, it seems more
> like 20%; just reading man pages on a console is annoying.
>
> It seems like this slowness does not start until the "processor"
> module is loaded. Is there some way to blacklist the processor
> module? I think I need to do it in the initrd somehow, because the
> processor module is loaded before any filesystems are mounted.
>
> I know very little about initrd stuff, but what I would like is to
> find some config file that affects the way the initrd is built that
> would allow me to blacklist the "processor" module during boot, so I
> could go ahead and use ACPI.
>
> Other comments welcome; thanks.
> Running Etch on i386; processor speed is 366Mhz. I've looked for BIOS
> updates (PhoenixBIOS) unsuccessfully.
I'm no expert at all, but you have no responses yet... So, any hints in
dmesg? On my PIII 500 mhz sarge box, I get this:
ACPI disabled because your bios is from 1999 and too old
You can enable it with acpi=force
And sure enough, it doesn't like to run with acpi=force, so I've left it
alone.
Perhaps you could remove acpi and load apm instead?
Good luck,
Ralph
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