[Sugar-devel] Wanting to know a bit of (NetworkManager) workflow upon resume-from-suspend

[Ajay Garg]

Thanks Paul.

I will give it a try myself.

Just one last question ::
I suppose that 'echo 0 > "/sys/class/net/eth0/lbs_mesh"' is a hack that is
olpc-customised. So, I will be really grateful if you could point me to
some docs (a wiki page may be), that provide information as to how this
hack affects, and is affected.


Thanks for your help.

Regards,
Ajay

On Tue, May 1, 2012 at 8:36 PM, Paul Fox <pgf at laptop.org> wrote:

> ajay wrote:
>  > Thanks Paul.
>  >
>  > On Tue, May 1, 2012 at 8:03 PM, Paul Fox <pgf at laptop.org> wrote:
>  >
>  > > ajay wrote:
>  > >  > Any ideas please, regarding the two latest queries :) ?
>  > >  >
>  > >  > Regards,
>  > >  > Ajay
>  > >  >
>  > >  > On Mon, Apr 30, 2012 at 1:00 PM, Ajay Garg <
> ajay at activitycentral.com>
>  > > wrote:
>  > >  >
>  > >  > > Thanks Martin and Jon for the replies.
>  > >  > >
>  > >  > > On Sun, Apr 29, 2012 at 3:04 PM, Jon Nettleton <
>  > > jon.nettleton at gmail.com>wrote:
>  > >  > >
>  > >  > >> On Sun, Apr 29, 2012 at 10:04 AM, Martin Abente
>  > >  > >> <martin.abente.lahaye at gmail.com> wrote:
>  > >  > >> > Are you guys still using this?
>  > >  > >> >
>  > >  > >>
>  > >  >
>  > >
>  >
> http://git.sugarlabs.org/dextrose-platform/mainline/blobs/master/etc/powerd/post
>  > >  > resume.d/disable_mesh.sh
>  > >  > >> >
>  > >  > >> > If so, you should remove it IF there is no way to guarantee
> that it
>  > >  > >> will run
>  > >  > >> > before NM picks up the device. At least it will avoid the
> crash...
>  > >  > >> >
>  > >  > >> > I would ask in the NM community if there is a better way to
>  > > disable a
>  > >  > >> > particular device, like banning a device(?).
>  > >  > >>
>  > >  > >> Edit /etc/NetworkManager/NetworkManager.conf
>  > >  > >>
>  > >  > >> Add a line to the [main] section like
>  > >  > >>
>  > >  > >> no-auto-default=xx:xx:xx:xx:xx (obviously replacing the x's
> with the
>  > >  > >> mac-address of your mesh device.)
>  > >  > >>
>  > >  > >
>  > >  > >
>  > >  > > This should be a lot cleaner solution.
>  > >  > > However, two queries ::
>  > >  > >
>  > >  > >
>  > >  > > a)
>  > >  > > Doing "ifconfig" on the XO-1, only shows information for "eth0"
> and
>  > > "lo"
>  > >  > > (no mesh device listed).
>  > >  > > So, how can the mac address for the mesh device be found?
>  > >
>  > > it's the same as that for eth0.
>  > >
>  >
>  > Does that mean, that banning eth0-mac-address prevent the loading of
>  > wifi-hardware-device as well (in obvious addition to mesh) ?
>  > This seems very pricky.
>
> i don't know.  i'm unfamiliar with NM config.  it doesn't sound too
> hard to try.
>
> paul
>
>  >
>  >
>  >
>  >
>  >
>  > >
>  > >  > > b)
>  > >  > > Are mac address for XO-1s, EXACTLY same, for every XO-1 on this
>  > > planet?
>  > >
>  > > of course not.  how would they tell one another apart?
>  > >
>  >
>  > Alright.
>  > But my first doubt (same mac address for mesh-hardware and
> wifi-hardware)
>  > has put me in topspin :~
>  >
>  >
>  >
>  > Regards,
>  > Ajay
>  >
>  >
>  >
>  >
>  >
>  > >
>  > > paul
>  > >
>  > >  > >
>  > >  > >
>  > >  > > Looking forward to a reply.
>  > >  > >
>  > >  > >
>  > >  > >
>  > >  > > Thanks and Regards,
>  > >  > > Ajay
>  > >  > >
>  > >  > >
>  > >  > >
>  > >  > >>
>  > >  > >> This does not stop NM from managing your device, but does stop
> it
>  > > from
>  > >  > >> auto-connecting the device.  You would still be able to go into
> NM
>  > > and
>  > >  > >> manually enable the mesh network.   If you want NM to completely
>  > > leave
>  > >  > >> the device alone you can go one more step.
>  > >  > >>
>  > >  > >> Also in /etc/NetworkManager/NetworkManager.conf
>  > >  > >>
>  > >  > >> change the plugins line to
>  > >  > >>
>  > >  > >> plugins=ifcfg-rh,keyfile
>  > >  > >>
>  > >  > >> Then add a section that looks like this.
>  > >  > >>
>  > >  > >> [keyfile]
>  > >  > >> unmanaged-devices=mac:xx:xx:xx:xx:xx:xx (Where X's are the mac
>  > > address
>  > >  > >> of the device you want to ignore)
>  > >  > >>
>  > >  > >>
>  > >  > >> Hope that helps, let me know if you have further questions.
>  > >  > >>
>  > >  > >> -Jon
>  > >  > >>
>  > >  > >
>  > >  > >
>  > >  > part 2     text/plain                 129
>  > >  > _______________________________________________
>  > >  > Devel mailing list
>  > >  > Devel at lists.laptop.org
>  > >  > http://lists.laptop.org/listinfo/devel
>  > >
>  > > =---------------------
>  > >  paul fox, pgf at laptop.org
>  > >
>
> =---------------------
>  paul fox, pgf at laptop.org
>
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