New F11 for XO-1.5 build 47

Tiago Marques tiagomnm at gmail.com
Mon Nov 30 12:04:18 EST 2009


By the way, powertop was indeed showing it spending almost all cpu time in C4.

Best regards

On Mon, Nov 30, 2009 at 5:03 PM, Tiago Marques <tiagomnm at gmail.com> wrote:
> On Mon, Nov 30, 2009 at 4:07 PM, John Watlington <wad at laptop.org> wrote:
>>
>> On Nov 29, 2009, at 1:21 PM, Tiago Marques wrote:
>>
>>> On Sun, Nov 29, 2009 at 5:53 PM, Chris Ball <cjb at laptop.org> wrote:
>>>>
>>>> Hi,
>>>>
>>>>  >> You can also disable it using My Settings -> Power -> Automatic
>>>>  >> power management.
>>>>
>>>> (Cool, I didn't think that would work yet!  But it does.)
>>>
>>> I also confirm that it disables well that way.
>>>
>>> /proc/cpuinfo isn't showing any change in processor clock to 400MHz,
>>> or anywhere below 1GHz. How can I confirm that it is underclocking?
>>
>> Try running powertop (yum install powertop), to see what amount of time
>> the processor is spending in each C-state.  The frequency scaling should
>> be automatic as well.   The C-7M is a strange beast, in that it already runs
>> at minimum voltage (0.798V) constantly, and it scales the frequency
>> continuously (since there are no corresponding voltage changes) as well.
>>
>> These are applied constantly --- the automatic power management
>> turns on the more aggressive suspend resume using the display controller.
>>
>
> Hmmm... I see. So there won't be any interfaces to kernel ACPI power
> management like the rest of the laptop hardware out there? I thought
> that the XO 1.5 was going to support the regular ACPI stuff, hence my
> surprise.
>
> Best regards,
> Tiago Marques
>
>> Cheers,
>> wad
>>
>>
>



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