[Om2008.9] How to power off Wifi?

W.Kenworthy billk at iinet.net.au
Thu Nov 13 00:54:45 CET 2008


`iwconfig eth0 power on txpower off`

to minimise power consumption, and the inverse

`iwconfig eth0 power off txpower auto`

to turn it back on.

While not removing power, it certainly reduces consumption.  Also, while
using wireless with power saving on sounds good when running on battery,
Ive found it rather flakey.  The above is minimal - for me it was better
to set other parameters such as channel number and SSID when powering up
as well.


On Wed, 2008-11-12 at 22:18 +0100, Alex Oberhauser wrote:
> On Wed, Nov 12, 2008 at 10:24:24AM +0200, Margo Koppelmann wrote:
> > I have the same question: how do i turn off wifi? I'm using FDOM and after
> > using wifi I do "ifdown eth0" and then turn wifi off in Config -> Settings
> > and then I turn it off in Config -> Services, but the little wifi icon in
> > the top panel still remains and the battery empties about 3 times faster
> > than usual. I have to restart my Freerunner everytime after I use wifi to
> > get the normal state back. Is it really impossible to turn the wifi off?
> I don't know exactly how it works under FDOM/2008.x, but under FSO you have
> the possibility to power off the devices (not only the wifi, also GSM, GPS and
> bluetooth) over D-Bus. I think there is a similar way in FDOM/2008.x. Another
> possible is to power it down manually (something under /proc/..., I have the
> exact path not in mind).
> For the power down of all devices which are able to send/receive I have
> written today a prototype as shell script and an more advanced in python. Is
> the first step toward the flight modus. Is there any plan in this direction?
> A few months ago I have read about it in the WIKI.
> Regards
> Alex
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