On Wed, Dec 29, 2010 at 11:55 AM, Stefan G. Weichinger <li...@xunil.at>wrote:
> Am 29.12.2010 19:48, schrieb Bill Longman: > > > 10:47:00# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_* > > 2667000 2666000 2533000 2399000 2266000 2133000 1999000 1866000 1733000 > > 1599000 1466000 1333000 1199000 > > conservative ondemand userspace powersave performance > > 1199000 > > acpi-cpufreq > > performance > > 1199000 > > 1199000 > > <unsupported> > > > > See what I mean? > > I see it but I don't have a solution. > > Maybe some strange limitation within the BIOS of the motherboard? > Ah, you wrote that Win does fine ... so ... > > Do you have the correct CPU chosen in your kernel-config? > > Maybe someone with a core i7 could help out here better than me ... > > google finds me this one pointing at apic: > > http://ubuntuforums.org/archive/index.php/t-1000132.html > > ? > Here are some powertop results I see when compiling world: PowerTOP version 1.13 (C) 2007 Intel Corporation Cn Avg residency P-states (frequencies) C0 (cpu running) (100.0%) Turbo Mode 0.0% polling 0.0ms ( 0.0%) 2.67 Ghz 0.0% C1 mwait 0.0ms ( 0.0%) 2.54 Ghz 0.0% C2 mwait 0.0ms ( 0.0%) 2.40 Ghz 0.0% C3 mwait 0.0ms ( 0.0%) 1199 Mhz 100.0% So it seems like all the CPU Power state is fine internally to the CPU but, it's just that it cannot go to the higher speeds for some reason. -- Bill Longman
