Openmoko Bug #2349: Too high power consumption in 2.6.32

Openmoko Public Trac bugs at
Fri Aug 20 17:35:36 CEST 2010

#2349: Too high power consumption in 2.6.32
 Reporter:  Q-Master  |          Owner:  openmoko-kernel
     Type:  defect    |         Status:  new            
 Priority:  normal    |      Milestone:                 
Component:  kernel    |        Version:                 
 Severity:  major     |       Keywords:                 
 Haspatch:  0         |      Blockedby:                 
Estimated:            |    Patchreview:                 
 Blocking:            |   Reproducible:  always         

Comment(by gena2x):

 I did measurements with multimeter, and found following.

 First, i measured qtmoko on nand:

 fully loaded qtmoko = 220mA
 qtmoko sleeps without deepsleep enabled = 32mA
 qtmoko sleeps with deepsleep enabled = 9-18mA

 on om-gta02-34, the power consumption with loaded X is 250mA
 on om-gta02-34, in suspend, it is 100mA

 some additional info: both u-boots draw 350mA while in menu -> strange.

 additionally i found that i can't do GSM calls in multimeter configuration
 in qtmoko.
 additionally i found that if i disconnect usb power supply, i can't
 register to gsm network in multimeter configuration (and can with adding
 usb power supply), both reliable.

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openmoko trac

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