[Dextrose] How to prevent suspending XO-1?

[Ajay Garg]

On Wed, May 2, 2012 at 10:56 PM, Anish Mangal <anish at activitycentral.com>wrote:

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> On Wed 02 May 2012 10:53:28 PM IST, Ajay Garg wrote:
> >
> >
> > On Wed, May 2, 2012 at 10:37 PM, Anish Mangal
> > <anish at activitycentral.com <mailto:anish at activitycentral.com>> wrote:
> >
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> >     On Wed 02 May 2012 10:32:19 PM IST, Ajay Garg wrote:
> >     > Ok, Thanks.
> >     >
> >     > a) How to confirm this, that automatic suspension is disabled?
> >     >
> >
> >     IIRC. *ONLY* on the XO-1
> >
> >
> > :D :D
> >
> > Ya, that's ok.
> > I meant, codewise.
> >
> >
> >
> >
> >
> >     >
> >     > b) It would be better if the suspension is disabled even during
> >     > lid closing, as that could be a frequent case to preserve physical
> >     > space.
> >     >
> >
> >     Why would disabling suspend save physical space? Sorry, I don't
> >     understand.
> >
> >
> > I meant, that closing the lid would preserver space.
> >
> >
> >
> >
> >
> >     >
> >     > c) The power-button case can be lived with.
> >     >
> >     >
> >
> >     Is this related to mesh icons reappearing after suspend, or there is
> a
> >     different reason?
> >
> >     Note, We _want_ to be able to suspend using lid-closing or power
> >     button. This significantly increases the battery life of the laptops,
> >     and they dont require frequent recharging.
> >
> >     The only reason why active power management (i.e. screen dimming,
> >     screen blanking out, wifi shutdown, suspend) is disabled on the XO-1
> >     is because it doesn't work reliably enough. I think the normal
> >     suspend-resume cycle works well though (save for the mesh issue)
> >
> >
> > Well, that is the problem at first place - after suspend, no icons
> > (wireless/mesh-if-at-all) occur (ad-hoc do).
> >
> >
> >
> >
> >
> >
> >     >
> >     > May be Jerry can comment?
> >     >
> >     >
> >     > Regards, Ajay
> >     >
> >     > On Wed, May 2, 2012 at 10:25 PM, Anish Mangal
> >     > <anish at activitycentral.com <mailto:anish at activitycentral.com>
> >     <mailto:anish at activitycentral.com <mailto:anish at activitycentral.com
> >>>
> >     > wrote:
> >     >
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> >     > On Wed 02 May 2012 10:23:39 PM IST, Ajay Garg wrote:
> >     >> Hi all.
> >     >>
> >     >> How can we prevent XO-1 from suspending?
> >     >>
> >     >> Esteban Arias from Ceibal says "enable_idle_suspend=0" in some
> >     >> ini file (haven't asked the details). Would that work for these
> >     >> cases ::
> >     >>
> >     >> a) Preventing XO-1 suspension, when idle for a long time?
> >     >>
> >     >>
> >     >> b) Preventing XO-1 suspension, when the power-button is pressed
> >     >> once?
> >     >>
> >     >>
> >     >
> >     > AFAIK, active power management on the XO-1 is disabled. This means
> >     > that the XO won't go into suspend if left idle.
> >     >
> >     > However, pressing the power button or closing the lid will take
> >     > the laptop in suspend, which is the intended behavior.
> >     >
>
> If we can't find a way to disable mesh after suspend without crashing
> NetworkManager, the _workaround_ would be to live with the mesh icons
> in neighbourhood view, not disable suspend!
>

Well, then what would be the difference from the case when the mesh-icons
are not shown at all in neighborhood view?
Packet forwarding would be happening in this case too.


So, to summarize, following options are possible :::


a)
Do not disable mesh at hardware level.
BUT
Stop listening to NM events from the mesh-device PLUS stop showing
mesh-icons in the neighborhood view.

Caveat : Packet forwarding still happpens (though I have put the query as
to why this would happen, even though no user has joined any
              mesh-channel.)





b)
Do not disable mesh at hardware level.
BUT
stop showing mesh-icons in the neighborhood view.

This is a sub-case of a).

Caveat: I don't think that b) can be any better than a).





c)
Disable mesh during reboot - ideal scenario.
AND
do not allow user to suspend ever.

Caveat: I don't think this would be acceptable, as suspension is necessary
to preserve battery.






d)
Do not disable mesh.

Well, this is the last option.

Caveat : This would too saturate RF (irrespective of  whether user joins a
mesh-channel or not, as per Martin Langhoff).



Regards,
Ajay




>
> >     >>
> >     >> Regards, Ajay
> >     >>
> >     >>
> >     >>
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> >
> >     - --
> >     Anish Mangal
> >     Dextrose Project Manager
> >     Activity Central
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> >
> >
> > Regards,
> > Ajay
>
>
>
> - --
> Anish Mangal
> Dextrose Project Manager
> Activity Central
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