Re: Missing C-States on Core Duo

[Frank Ursel <listadress@gmx.net>]

On Sun, Feb 04, 2007 at 04:25:32PM +0100, Evgeni Golov wrote:
> On Sun, 4 Feb 2007 16:19:01 +0100 Frank Ursel wrote:
> 
>> On my laptop [1] shows a maximum of 8 c-states. But only 3 are in use.
>> Where are the others gone? The output of dmesg[2] shows only three of
>> them, too. The max_cstate reports 8 so whats wrong with my system? As
>> far as I know, there should be at least a C4-state. Is there any
>> parameter, I need to pass through the kernel or is it a damn
>> limitation of my system or what else went wrong? The laptop is a
>> Fujitsu-Siemens S7110 and I'm using a brand new Etch.
> 
> Unload the usb modules, and your lost C-states will reappear :(

Stupid question: How to "modprobe -r usbcore"? It says that the module is
in use and modprobe fails. It is the only module remaining with:

#lsmod | grep usb
usbcore               112644  1

> Damn USB.

Sounds like USB together with lower C-states is impossible? Odd.

Frank