Power managment

Lars-Peter Clausen lars at metafoo.de
Tue Jan 19 13:43:26 EST 2010


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Ron K. Jeffries wrote:
> This begs the question -- how much does "suspend" reduce Nanonote
> power consumption? --- Ron K. Jeffries
>
>
>
> On Tue, Jan 19, 2010 at 07:46, Lars-Peter Clausen <lars at metafoo.de>
> wrote:
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>>
>> Carlos Camargo wrote:
>>> Hi
>>>
>>> There is any application/driver for resume/suspend the Nano?
>>>
>>> Carlos
>>>
>> Hi
>>
>> `echo mem > /sys/power/state` suspends the nanonote. Pressing any
>> of the keyboards buttons resumes it.
Hi

A lot. Mirko posted some measurements I did some time ago after
implementing suspend:

 State              | Power consumption  |
- --------------------|--------------------|
Under full load     | 160   mA           |
Idle black screen   |  94.5 mA           |
Idle white screen   |  92   mA           |
Idle colored screen | 104   mA           |
Display off         |  52.5 mA           |
Suspended           |   9.8 mA           |

- - Lars


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