On Sun, 2008-08-10 at 21:44 -0700, S K wrote: > >> So I'm guessing this is a kernel bug. > > >From the attached acpidump it seems that there is no definition of > > _PCT,_PSS, _PPC. So acpi_cpufreq driver can't be used on your machine. > > This is a BIOS issue. > > Yakui, Did you actually check if the above was true? Yes. There is no definition of _PSS,_PCT,_PPC in DSDT table, which are required by acpi_cpufreq driver.At the same time there is no extra SSDT table. > > > > But it is very strange that cpufreq scaling can work on Windows XP. > > Will you please try the P4 clock cpufreq driver and see whether the > > scaling can work ? In fact P4 clock cpufreq driver is already replaced > > by acpi_cpufreq driver for the latest cpu. > > Anyway please try p4 clock cpufreq driver. > > What is the name of the driver? I'm not able to find any such driver > in Fedora 9 installed modules. There is only acpi-cpufreq and powernow-k8. The driver is P4-clockmod, which is located in the directory of arch/x86/kernel/cpu/cpufreq > > Also, If someone doesn't mind, can they tell me what all files I need to > replace in Fedora 9 once I get a kernel.org kernel compiled? I know > how to edit grub.conf, > and that I should replace vmlinuz, but do I need to replace initrd too? Maybe you should enable "CONFIG_X86_P4_CLOCKMOD" in kernel configuration and compile a new kernel. thanks. > > Thanks, > SK -- 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
