[Community] GTA04 - Power management improvements

Lukas Maerdian luk at slyon.de
Wed Jan 29 10:44:09 CET 2014


2014-01-29 Neil Jerram <neil at ossau.homelinux.net>:
>>> I can confirm that powering down the modem before powering down the
>>> device results in ~0 power usage!
>>>
>>> I used the modem-poweroff.sh script in /opt/qtmoko/bin/ yesterday
>>> evening before calling "poweroff" on the device and after powering it on
>>> this morning (after 9:25 hours) I saw a mere 5mAh decrease in the
>>> charge-value of the battery. I saw this *after* boot so most/all of it
>>> is due to power-usage of the boot process.
>>
>>
>> That is fine since everything else would have made me wonder a little.
>
>
> I assume that this testing and discussion is primarily for the GTA04 A4.  Is
> the modem-poweroff.sh script also useful for the A3?

Yes this is only for GTA04 A4+, on the A3 there is a hardware bug,
which prevents the modem from powering completely off.

BR,
  Lukas



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