[IAEP] [Sugar-devel] XO power management hindering collaboration

[Samuel Greenfeld]

In what build(s) is this occurring?  And are you using a schoolserver or
not?

OLPC release 10.1.3 fixed some issues with XO 1.5's waking up in response to
multicast traffic on the network.  This is necessary for Salut/"under the
tree" usage to work with power management.  XO-1's with 10.1.3 are
configured by default to always stay on, as they (to the best of my
understanding) historically have had an occasional issue where the network
card might not reappear after suspending.

In 11.2.0 both XO-1's and 1.5's currently are allowed to suspend, although I
do not know if that will be the final setting.


On Sun, May 15, 2011 at 12:40 PM, <mokurai at earthtreasury.org> wrote:

> On Sat, May 14, 2011 10:04 am, Sridhar Dhanapalan wrote:
> > It's looking to us that the aggressive power management enabled on the
> > XO can sometimes create confusion when children are collaborating on
> > activities.
> >
> > Take for example a turn-based game like Memorise. If a child is
> > waiting for their turn, they might leave the XO untouched. In that
> > time, power management can kick in, and the XO stops communicating
> > over the wireless network. Waking up the XO (e.g. by touching the pad)
> > doesn't always rejoin the XO to the game properly. The whole game is
> > stalled because the turn cannot be completed.
>
> Is this in the bug tracking system? If not, please file a bug report. (We
> can help.) If it is, please add your experience to the existing bug
> report.
>
> > Are there any ways we can manage this in our deployments? Perhaps some
> > guidelines to give to teachers so that they have a reasonable
> > expectation?
>
> An obvious workaround is to keep touching the XO so that it does not go to
> sleep.
>
> The more clumsy process is for the active player to exit and save, then
> open the saved Journal entry and share again.
>
> > Thanks,
> > Sridhar
> >
> >
> >
> > Sridhar Dhanapalan
> > Technical Manager
> > One Laptop per Child Australia
> > M: +61 425 239 701
> > E: sridhar at laptop.org.au
> > A: G.P.O. Box 731
> >      Sydney, NSW 2001
> > W: www.laptop.org.au
> > _______________________________________________
> > IAEP -- It's An Education Project (not a laptop project!)
> > IAEP at lists.sugarlabs.org
> > http://lists.sugarlabs.org/listinfo/iaep
> >
>
>
> --
> Edward Mokurai
>
> (默雷/धर्ममेघशब्दगर्ज/دھرممیگھشبدگر
> ج) Cherlin
> Silent Thunder is my name, and Children are my nation.
> The Cosmos is my dwelling place, the Truth my destination.
> http://www.earthtreasury.org/
>
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