Re: Power States

[Alexey Starikovskiy <alexey.y.starikovskiy@linux.intel.com>]

6 is lowest FSB multiplier, 0.266*6 = 1.6GHz -- your lowest.
7 is multiplier to get 1.86Ghz -- your max.

"power management:        no"  means  power management is disabled.


Balaji Rao wrote:
> also, the file cat /proc/acpi/processor/CPU1/info gives this
>
> processor id:            0
> acpi id:                 1
> bus mastering control:   yes
> power management:        no
> throttling control:      yes
> limit interface:         yes
>
> Is power management not available according to this file?
>
> One more thing is that, only two frequency levels ( 1.86 and 1.6 Ghz)
> are being used. This does not cause much power saving..
>
> How many levels are actually available on core 2 duo?
>
> I cant find any PSS in the DSDT dump.
>
> On 12/21/06, Alexey Starikovskiy 
> <alexey.y.starikovskiy@linux.intel.com> wrote:
>> Then you should check your BIOS settings for DBS/EST/speedstep etc 
>> support.
>> C1 is the only C-state supported on CoreDuo2.
>> PSS should give you P-states.
>>
>> Balaji Rao wrote:
>> > But, acpidump doest give me anything saying SSDT..
>> > Actually the problem is, only one power state(C1) is being shown up in
>> > my Core 2 Duo (E6300) box.
>> >
>> > Also, power management is reported as not available.
>> >
>> > Where can i look for a solution?
>> >
>> >
>> > On 12/21/06, Alexey Starikovskiy
>> > <alexey.y.starikovskiy@linux.intel.com> wrote:
>> >> Balaji Rao wrote:
>> >> > Hello all,
>> >> >
>> >> > Are the various power levels supported by the processor provided 
>> only
>> >> > through the DSDT? Or is there any other table for this purpose?
>> >> > When i disassembled my DSDT, i could not find any _PSS Packages.
>> >> >
>> >> > From where does the kernel read values into the frequency table?
>> >> >
>> >> > Also, which is the mechanism that decides to load the appropriate
>> >> > cpufreq driver?
>> >> >
>> >> > warm regards
>> >> >
>> >> > Balaji Rao
>> >> > -
>> >> > To unsubscribe from this list: send the line "unsubscribe
>> >> linux-acpi" in
>> >> > the body of a message to majordomo@vger.kernel.org
>> >> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> >> Check SSDTs as well.
>> >>
>> >> Regards,
>> >>     Alex.
>> >>
>> >
>> >
>>
>
>