New F11 for XO-1.5 build 47

Tiago Marques tiagomnm at
Mon Nov 30 12:03:50 EST 2009

On Mon, Nov 30, 2009 at 4:07 PM, John Watlington <wad at> 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> 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

Best regards,
Tiago Marques

> Cheers,
> wad

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