[maemo-developers] Power management is going to drive me mad!

[From: Faheem Pervez]

Enjoy (some half-hour I wasted :p. Yes, dbus ain't my strong point):

Normal:
/usr/bin/dbus-send --system --type=signal /com/nokia/mce/signal
com.nokia.mce.signal.sig_device_mode_ind string:"normal"

Flight:
/usr/bin/dbus-send --system --type=signal /com/nokia/mce/signal
com.nokia.mce.signal.sig_device_mode_ind string:"flight"

Either make the python app exec the command above or  make python do it
nativly  (dbus module exists in python and quite a few maemo python apps
that use dbus for example)
On Thu, Jun 19, 2008 at 7:58 AM, George Nachman <maemodev at georgester.com>
wrote:

> Hi maemo-developers,
>
> Is it possible on the N800 to programatically shut down the wifi
> interface and bring it back up?
>
> I have an application that very occasionally needs network
> connectivity. If I leave my device connected to wifi, the battery dies
> too quickly. I would like to have the software turn on the wifi
> interface, do its thing, and then turn the interface off to conserve
> energy. I've considered other solutions, but I think this is the
> simplest answer.
>
> I thought at first that libconic could do this, but it appears not (at
> least not in Python: see the comment here:
>
> https://garage.maemo.org/svn/pymaemo/packages/python-conic/branches/chinook/tests/test_disconnect.py
> ).
> Is it possible? I saw a veiled reference to sending d-bus messages
> (http://maemo.org/pipermail/maemo-developers/2007-April/009462.html),
> but it wasn't specific enough to turn into code.
>
> I tried running /etc/init.d/wlancond stop, but that doesn't seem to
> decrease power consumption.
>
> Is there a magical dbus message I can send? If I could trick it into
> entering/exiting flight mode, that would work too. I've been
> experimenting for hours with no luck.
>
> Thanks for your help,
> George
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>
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