[Gta04-owner] GTA04 power management.

NeilBrown neilb at suse.de
Sun Jan 1 11:25:00 CET 2012


On Sat, 31 Dec 2011 15:43:24 +0100 Rainer Dorsch <rdorsch at web.de> wrote:

> Am Saturday 24 December 2011 schrieb Dr. H. Nikolaus Schaller:
> > > thanks for the code and sharing the data of your experiments.
> > >
> > > 
> > >
> > > can we do a bottom-up calculation? I.e. build up a spreadsheet like
> > > document,  which contains the power consumption of every
> > > component/subsystem in each of its power mode (if there are more than on
> > > and off).
> > 
> > There is a (incomplete) table in section 5.20 on page 51 of the system
> > manual for the GTA04.
> 
> Not sure if it helps, but I found some detailed power numbers for the n900:
> 
> http://wiki.maemo.org/N900_Hardware_Power_Consumption
> 
> Suspend (echo mem >/sys/power/state), wifi and GSM off. 2 mA T
> Suspend, GSM on, connected to 3G (2 bars) 5 mA T
> Suspend, GSM on, connected to 2G. (2 bars) 3.6 mA T
> Idle, no SIM, wlan off 7 mA at 4.1 V T
> 
> Rainer
> 

Thanks for the pointer.

It does look like very similar hardware, and much lower power usage than I am
getting.  Both in suspend and in idle the N9 uses much less power.

There must be a bug somewhere....

Thanks,
NeilBrown
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