>-----Original Message-----
>From: Almonas Petrasevicius [mailto:[email protected]]
>Sent: Thursday, September 14, 2006 12:43 PM
>To: Ben B
>Cc: [email protected]; Pallipadi, Venkatesh;
>[email protected]
>Subject: Re: speedstep-centrino broke
>
>
>On Thu, 14 Sep 2006, Ben B wrote:
>
>>> I did verify both kernels 2.6.16 and 2.6.17 (both vanilla), there is
>>> _no_ difference, both have the same speedstep problem.
>>
>> At the suggestion of Venki, I opened a bugzilla ticket on it:
>>
>> http://bugzilla.kernel.org/show_bug.cgi?id=7157
>>
>> And the lowdown is that it seems the newer BIOS no longer exports the
>> correct ACPI symbols which are required for speedstep, thus no longer
>> supporting it (at least via the official methods). Hence it
>seems not a
>> Linux kernel bug.
>
>Could be. But I am still somehow puzzled, since neither of the
>previous versions (F04 & F06 in my case) contain any reference to the
>mentioned methods (_PSS & _PCT). But those versions were
>speedsteping just
>fine.
>Or maybe I don't know how to look.
>Could You dump your "working" ACPI table and look for those
>two methods?
As you mentioned in your earlier mail, CpuPm object is missing after
BIOS update. That table, most probably, will contain these ACPI _PSS etc
methods internally.
Thanks,
Venki
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