Anyone care to help? -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
