[ltp] T41p suspend to RAM on 2.6.11.3

Bob Alexander linux-thinkpad@linux-thinkpad.org
Thu, 17 Mar 2005 11:43:15 +0100


Daniel Stodden wrote:
> i've just written a small script to measure sleep power consumption on
> each suspend to ram. results below, though i did not take the full 15
> minutes.
> 
> Mar 17 09:59:42 localhost acpi: enter: 1111049982 s, 40340 mWh
> Mar 17 10:07:38 localhost acpi: leave: 1111050458 s, 40270 mWh
> Mar 17 10:07:38 localhost acpi: power consumption: 70 mWh / 476 s = 529
> mWh/h
> 
> that already seems to roughly match the approximate 600mWh targeted by
> the patches theo ts'o sent around yesterday.
> 

Well. You're a lucky guy. Happy for you. Do you use radeon frame buffer ?

> 
>>Are you using an unpatched 2.6.11.3 kernel ?
> 
> 
> currently based on vanilla 2.6.11.3 + swsusp2 + a small number of
> patches totally unrelated to power management. non-stock modules, e.g.
> recent ibm-acpi, not counted as patches.
> 
> which would you suggest? the patches theo ts'o sent yesterday?
> 
> regards,
> daniel
> 

I have a very similar setup.

2.6.11.4 + swsusp2 + ibm_acpi + radeonfb power drain patch + one acpi 
patch. system very stable but drain SLIGHTLY higer in the 800mW/hour range.

Will publish the patches I am using and kernel config alter on this day 
if I manage.

Take care,
Bob