On Thu, 2008-08-07 at 02:35 -0700, S K wrote: > Anyone care to help? > Will you please confirm whether the acpi_cpufreq driver is used on your machine? Please enable CONFIG_CPUFREQ_DEBUG in kernel configuration and boot the system with "cpufreq.debug=7". After the system is booted, please attach the output of dmesg. please attach the output of acpidump using the latest pmtools at http://www.lesswatts.org/patches/linux_acpi/ Of course you can open a new bug in bugzilla and attach the output of dmesg, acpidump, lspci -vxxx. http://bugzilla.kernel.org/enter_bug.cgi?product=ACPI Thanks. > -SK > > 2008/8/3 S K <nospamnoham@xxxxxxxxx>: > > Hi, > > > > I'm attaching the acpidump output. Can someone (ACPI guys??) please > > me help figure this out? > > Is there any other info that's needed to debug this? > > > > I can be a tester for this and even do some development within the > > limits of my understanding. > > > > Thanks, > > SK > > > > On Sun, Aug 3, 2008 at 3:31 AM, none <aj504@xxxxxxxxxxxxxxxxxxxxx> wrote: > >> S K wrote: > >>> Hi, > >>> > >>> I have an Intel Core 2 Quad and running kernel > >>> 2.6.25.11-97.fc9.i686. cpufreq doesn't seem to work. The cpufreq > >>> scaling monitor in Gnome says CPU Freq scaling is not supported in my > >>> CPU. The CPU can run at 2.0 and 2.5 GHz but mine always runs at 2.5 > >>> GHz in Linux. > >>> > >>> So I checked /sys and there is no cpufreq dir in /sys/... > >>> > >>> # ls /sys/devices/system/cpu/ > >>> cpu0 cpu1 cpu2 cpu3 cpuidle sched_mc_power_savings > >>> # ls /sys/devices/system/cpu/cpuidle/ > >>> current_driver current_governor_ro > >>> > >>> I have no clue what cpuidle directory is for. > >>> > >>> I added cpufreq.debug=7 in kernel boot params and saw the following in > >>> the dmesg: > >>> > >>> speedstep-smi: No supported Intel CPU detected. > >>> cpufreq-core: CPU 0: _PPC is 0 - frequency not limited > >>> cpufreq-core: CPU 3: _PPC is 0 - frequency not limited > >>> cpufreq-core: CPU 1: _PPC is 0 - frequency not limited > >>> cpufreq-core: CPU 2: _PPC is 0 - frequency not limited > >>> cpuidle: using governor ladder > >>> cpuidle: using governor menu > >>> > >>> I looked at arch/x86/kernel/cpu/cpufreq/speedstep-smi.c and it seems > >>> to detect only Pentium IIIs. > >>> > >>> Anyone know what files have the cpufreq code for Intel Core 2? > >>> Does cpufreq support Intel Core 2 Quads? Especially the Q9300? If not, > >>> anything I can do to help? > >> > >> I have an Intel Core 2 Duo and it uses the ACPI cpufreq driver; your > >> Quad should do the same. So this is likely an ACPI/BIOS issue. > >> > >> If you ask ACPI people they will ask you to post the output of acpidump. > >> Also you should probably check if you have a BIOS option that needs to be > >> enabled for this to work. > >> > >> BTW, cpuidle is something quite different, it is about how to save power > >> when CPU is doing nothing (i.e. idle :-). Cpu frequency scaling is how to > >> save power when CPU is working (but doesn't need to run flat out). > >> > >> Alan > >> > > > -- > 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
