[Gta04-owner] Modem off

Andreas Kemnade andreas at kemnade.info
Sat Nov 16 11:30:33 CET 2013


On Sat, 16 Nov 2013 10:18:40 +1100
NeilBrown <neilb at suse.de> wrote:

> On Wed, 13 Nov 2013 15:45:31 +0100 Andreas Kemnade <andreas at kemnade.info>
> wrote:
> 
> > Hi,
> > 
> > On Tue, 2013-11-12 at 09:49 +1100, NeilBrown wrote: 
> > > On Mon, 11 Nov 2013 16:38:31 +0100 Andreas Kemnade <andreas at kemnade.info>
> > > wrote:
> > > 
> > > > > 
> > > > > I look forward to hearing of your results.
> > > > 
> > > > At the moment I even cannot reproduce your the lower currents when the
> > > > module is removed or unbind is done (when the modem does not show up on
> > > > the bus). I measured current_now directly after suspend and retried also
> > > > with that 5-min average using charge_now.
> > > 
> > > What current do you measure? 
> > 
> > 3.7 with ehci-hcd compiled in
> > - 32mA without modem, 2 tries
> > doing unbind
> > - 45mA (3x)
> > doing bind
> > - 54mA
> > - 24mA
> > - 24mA
> > - 54mA
> > 
> > doing unbind
> > 
> > - 45mA
> > - 45mA
> > 
> > doing bind
> > - 24mA
> > - 24mA
> > - 47mA(?)
> > - 24mA
> > - 24mA
> > - 41mA(?)
> 
> So if we ignore occasional high values you get about 24mA when the driver is
> bound, and about 45mA when not bound.
> 
> That is the oppositte of what I get for loading and unloading, which is
> surprising.
And it is also surprising that the bind gives lower current than the intial situation
when the driver is automatically bound during boot.

> 
> Is this will the modem still turned off? (Do you have an A3 or an A4?).
> 
It is an a4. The "energy harvester" is off. If that energy harvester is on, i get a bit less current.

Greetings
Andreas Kemnade
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