Messages in this thread | | | Date | Fri, 22 Jul 2005 20:02:36 +0200 | From | Pavel Machek <> | Subject | Re: 2.6.13-rc3 Battery times at 100/250/1000 Hz = Zero difference |
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Hi!
> and catting /proc/acpi/processor/CPU0/power gives > active state: C1 > max_cstate: C8 > bus master activity: 00000000 > states: > *C1: type[C1] promotion[--] demotion[--] latency[000] usage[02998796] > > /sys/module/processor/parameters/max_cstate says 8 > /sys/module/processor/parameters/bm_history says 4294967295 > > So I'm a bit baffled that no C2/C3 turns up. I've done a test-compile > with all of ACPI in kernel instead of as modules, but there was no > difference. > > I'll unload the whole USB-module part and boot without loading them, but > will it matter? Please provide more details about how to debug this > (very confusing) field.
Okay, if you have no C2/C3 like the dump above shows, unloading usb will not help. It seems like your machine is simply not able to do reasonable powersaving. Pavel
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