[Bug 482] phone still consumes energy when powered off
bugzilla-daemon at bugzilla.openmoko.org
bugzilla-daemon at bugzilla.openmoko.org
Thu Apr 19 16:10:13 CEST 2007
http://bugzilla.openmoko.org/cgi-bin/bugzilla/show_bug.cgi?id=482
laforge at openmoko.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tim_lee at fic.com.tw
Component|kernel |Audio
Product|OpenMoko |Neo1973 Hardware
Version|unspecified |GTA01Bv3
------- Additional Comments From laforge at openmoko.org 2007-04-19 16:10 -------
mh, thinking a bit about how our power-off works (sending shutdown command to
PMU), I could think the audio amplifier LM4857 could still be "alive":
This component is powered directly by the battery. We might not power it down
completely before software issues power-off, resulting in some remaining power
draw by the amplifier. Unfortunately there seems to be no series resistor
between VDD of the LM4857 and +VB. Maybe the hardware team has an idea on how
to measure LM4857 power consumption?
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