Re: Centrino speedstep

[Pedro Venda <pjlv-aHmAgkVUFT6Joy8PIJZ9VA@public.gmane.org>]

Johan Vromans wrote:
> [Quoting Pedro Venda, on December 30 2004, 17:27, in "Re: Centrino speedst"]
> 
>>will dissassemble my dsdt tonight and upload it to somewhere on the
>>internet.
> 
> 
> Yes, please.

here it is:
http://arrakis.dhis.org/linux/laptop/dsdt.dsl.gz

my bios version is:

System BIOS Ver: 3A06
VGA BIOS Ver: ATI-M11-008.018M.017.000
KBC Ver: PQ1A28

(may look like copied from your e-mail but wasn't)

the machines look exactly the same. the only difference is that mine works with 
the speedstep centrino driver and johan's doesn't.

This may be the responsible for mine to work with the speedstep driver:
(from kernel config)

       Default CPUFreq governor (ondemand)  --->
   x x              <M>   'performance' governor
   x x              <M>   'powersave' governor
   x x              <M>   'userspace' governor for userspace frequency scaling
   x x              [ ]     /proc/sys/cpu/ interface (2.4. / OLD)
   x x              ---   'ondemand' cpufreq policy governor
   x x              <*>   CPU frequency table helpers
   x x              ---   CPUFreq processor drivers
   x x              < > ACPI Processor P-States driver
   x x              < > AMD Mobile K6-2/K6-3 PowerNow!
   x x              < > AMD Mobile Athlon/Duron PowerNow!
   x x              < > AMD Opteron/Athlon64 PowerNow!
   x x              < > Cyrix MediaGX/NatSemi Geode Suspend Modulation
   x x              <M> Intel Enhanced SpeedStep
   x x              [*]   Use ACPI tables to decode valid frequency/voltage pairs
   x x              [*]   Built-in tables for Banias CPUs

the two last lines look to me like the tables referred above. am I right? Also, 
CPU frequency table helpers seems familiar. What are the differences between 
both tables really?

also, how exactly can I use ACPI throttling? because with the speestep driver, I 
can't go below 600MHz, but 12% of maximum frequency is 180MHz which I can reach 
using ACPI throttling.

care to comment?

> 
>>are you completely unable to use speedstep-centrino and/or ondemand
>>speedfreq governor?
> 
> 
> Yes. Upon boot, I always get the message:
> 
>   speedstep-centrino: no table support for CPU model "Intel(R) Pentium(R) M processor 1.50GHz": 
>   speedstep-centrino: try compiling with CONFIG_X86_SPEEDSTEP_CENTRINO_ACPI enable

I'm also using stock kernel 2.6.10 with stock acpi code but I have a different
message:
speedstep-centrino: invalid ACPI data

But the module seems to work ok. is there an easy way to test it?

regards,
pedro venda.
-- 

Pedro João Lopes Venda
email: pjlv-aHmAgkVUFT6Joy8PIJZ9VA@public.gmane.org
http://arrakis.dhis.org



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