[Gta04-owner] Current consumption during suspend

[Christoph Mair]

On Sat, Aug 25, 2012 at 3:47 PM, Christoph Mair
<christoph.mair at gmail.com> wrote:
> - the current consumption has periodic spikes with intervals of 500ms
> and 1.42s

These spikes [1] disappear if the modem is registered to the network
with a valid sim card. Now I could observe small spikes occurring
every 30 seconds.
Further observations: If the sleep current is not somewhere around
20mA but near 25mA the ITG-3200 may caused the additional power
consumption. There seem to be a few cases where the chip isn't reset
correctly which causes its I2C interface to malfunction and therefore
the kernel can't tell it to suspend.

I also removed the metal shield of my modem to get a thermal view of
the inside. Result: no visible power leakage.

Best regards,
  Christoph

[1] http://chonyota.net/gta04/infrared-2/currentconsumption.png