On Thu, 2006-12-21 at 03:20 +0800, Balaji Rao wrote: > also i get these two errors. kernel version 2.6.20-rc1-mm1 > ACPI Exception (acpi_processor-0680): AE_NOT_FOUND, Processor Device > is not present [20060707] > ACPI Exception (acpi_processor-0680): AE_NOT_FOUND, Processor Device > is not present [20060707] > and, > > acpi_processor-0740 [00] processor_preregister_: Error while parsing > _PSD domain information. Assuming no coordination > This is just a warning. > does power management "no" mean, hardware does not suppport it? or > can > it be enabled? > > On 12/21/06, Alexey Starikovskiy > <alexey.y.starikovskiy@xxxxxxxxxxxxxxx> wrote: > > 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. _PSS may be contained in DSDT, SSDT and dynamic loaded tables. If you have any doubts, open a bug report in bugzilla.kernel.org attach your kernel config, acpidump and dmesg at the same time. > > > > > > On 12/21/06, Alexey Starikovskiy > > > <alexey.y.starikovskiy@xxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxxx > > >> >> > More majordomo info at http://vger.kernel.org/majordomo- > info.html > > >> >> Check SSDTs as well. > > >> >> > > >> >> Regards, > > >> >> Alex. > > >> >> > > >> > > > >> > > > >> > > > > > > > > > > > -- > warm regards > > Balaji Rao > - > To unsubscribe from this list: send the line "unsubscribe linux-acpi" > in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
