<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 12 (filtered medium)">
<style>
<!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;}
@page Section1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.Section1
{page:Section1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang=EN-NZ link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I’ll do some work when I get a chance to replicate and isolate
the issue and get some data as you suggest.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Quick question, is it possible to transfer the database and
Moodle history (users, etc) from one XS installation to a new one, i.e.
effectively to make a copy..? <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>David Leeming<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> Martin Langhoff
[mailto:martin.langhoff@gmail.com] <br>
<b>Sent:</b> Sunday, 29 April 2012 1:45 a.m.<br>
<b>To:</b> David Leeming<br>
<b>Cc:</b> OLPC Devel; XS Devel; James Cameron<br>
<b>Subject:</b> RE: [Server-devel] Collaboration XO-1 with XS<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p>When the problem happens, it'll be interesting to see the output of
olpc-netstatus and olpc-xos cmdline utilities on XOs that have trouble and on
those that don't.<o:p></o:p></p>
<p>There's additional debugging info you can get from ejabberd on the XS.<o:p></o:p></p>
<p>There's a page in the wiki (in the XS techniques page?) that lists all the
debugging/diagnostics steps for collaboration. <o:p></o:p></p>
<p>What James mentions is correct, too. A reconnection is what is probably
"fixing" it.<o:p></o:p></p>
<p>hth,<o:p></o:p></p>
<p>m<o:p></o:p></p>
<div>
<p class=MsoNormal>On Apr 28, 2012 5:14 AM, "David Leeming" <<a
href="mailto:david@leeming-consulting.com">david@leeming-consulting.com</a>>
wrote:<o:p></o:p></p>
<div>
<p><span style='font-family:Consolas'>Hi James,</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>I have been</span> <span
style='font-family:Consolas'>fairly familiar</span> <span style='font-family:
Consolas'>some time</span> <span style='font-family:Consolas'>with using the
basic default installation of the XS. It is</span> <span style='font-family:
Consolas'>specifically the combination</span> <span style='font-family:Consolas'>of
XO-1 build 883 / Sugar 0.94.1 with XS0-0.6 which</span> <span style='font-family:
Consolas'>has thrown up some issues</span> <span style='font-family:Consolas'>-</span>
<span style='font-family:Consolas'>with collaboration.</span> <o:p></o:p></p>
<p><span style='font-family:Consolas'>A typical situation when we observe this
recently: a workshop with 20 teachers, all who have freshly installed release
11.3.0 on their XO-1s and registered on the workshop XS and restarted. All have
been accessing the Moodle pages with no problems and the links to the public
content in the /library folder. I</span> <span style='font-family:Consolas'>will</span>
<span style='font-family:Consolas'>have been using the XS network</span> <span
style='font-family:Consolas'>wirelessly to an XO that is running Classroom
Broadcast Activity, with no difficult whatsoever. So there is no need to ping
the server to understand that the XOs</span> <span style='font-family:Consolas'>are
all properly connected and registered, although I take your point and would
have done more</span> <span style='font-family:Consolas'>diagnostics if i knew
how to isolate the issue with the collaboration problem we experienced. </span><o:p></o:p></p>
<p><span style='font-family:Consolas'>We were able to replicate the issue on
identically set-up servers. The issue is:</span> <span style='font-family:Consolas'>not
all the other connected XOs appear in the neighbourhood view, and when trying
to demonstrate collaboration using the set up above, it was only rarely that
the "sharing" icon appeared on other XOs</span> <span
style='font-family:Consolas'>neighbourhood view even though all else seemed to
be working fine.</span> <span style='font-family:Consolas'>I tried using the
discard network history with a few XOs</span> <span style='font-family:Consolas'>only
once</span> <span style='font-family:Consolas'>at the end of the workshop, and
we then run out of time. I tried again with my own setup later, using two XOs
only, and replicated the issue but the discard history did not work then. So
that</span> <span style='font-family:Consolas'>might not be useful
information. </span> <o:p></o:p></p>
<p><span style='font-family:Consolas'>Perhaps I should rephrase my question:</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>Was it intended that collaboration should
work with XO-1s running release 11.3.0 using the XS-0.6 default installation? </span><o:p></o:p></p>
<p><span style='font-family:Consolas'>Secondary question, if this is not
working, and I have made no customisation other than add some links using
aliases presented as links on the Moodle home page, what can I do to trouble
shoot?</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>David Leeming</span><o:p></o:p></p>
<p><span lang=EN-US style='font-family:Consolas'>-----Original Message-----<br>
From: <a href="mailto:quozl@us.netrek.org" target="_blank">quozl@us.netrek.org</a>
[<a href="mailto:quozl@us.netrek.org" target="_blank">mailto:quozl@us.netrek.org</a>]
On Behalf Of James Cameron<br>
Sent: Friday, 27 April 2012 7:39 a.m.<br>
To: David Leeming<br>
Cc: 'XS Devel'; 'OLPC Devel'<br>
Subject: Re: [Server-devel] Collaboration XO-1 with XS</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>On Fri, Apr 27, 2012 at 06:38:00AM +1000,
David Leeming wrote:</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>> [...] we work around it by for
instance using ?discard network</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>> history? which seems to help.</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>I was deeply involved in the
"discard network history" feature at one</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>point in development, and at the time the
only thing it did was to</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>remove access point names (ESSIDs) from
the list of known access points.</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>I've just checked the code and that is
still only what it does.</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>So I'm surprised it is having an
effect. But congratulations for</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>finding it does have an effect.</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>I know nothing about the network at the
location. Is there more than</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>one access point name available?</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>If so, at the time of the problem, the
reason the button is having an</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>effect may be because a disconnection has
led to the laptop associating</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>with another access point, and pressing
the button would prevent that.</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>If not, then the button is only serving
to disconnect the laptop from</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>the network. You may find the same
effect to occur by clicking on the</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>access point in the network neighbourhood
view.</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>Lastly, whether activities are open at
the time of the forced disconnect</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>and reconnect may be interesting.</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>Next time, please do some technical
diagnosis at the time of the problem</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>... use Terminal activity to ping the
server. As I have recently seen</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>examples of TP-Link with OpenWRT access
points that silently block data</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>flow, it reminds me that some diagnosis
is worth doing. In the cases I</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>observed, data flow was restored by
reconnecting. That you currently</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>reconnect to work around the problem may
be a coincidence, or it might</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>be this same kind of problem.</span><o:p></o:p></p>
<p><span style='font-family:Consolas'>-- </span><o:p></o:p></p>
<p><span style='font-family:Consolas'>James Cameron</span><o:p></o:p></p>
<p><span style='font-family:Consolas'><a href="http://quozl.linux.org.au/"
target="_blank">http://quozl.linux.org.au/</a></span><o:p></o:p></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
_______________________________________________<br>
Devel mailing list<br>
<a href="mailto:Devel@lists.laptop.org">Devel@lists.laptop.org</a><br>
<a href="http://lists.laptop.org/listinfo/devel" target="_blank">http://lists.laptop.org/listinfo/devel</a><o:p></o:p></p>
</div>
</div>
</body>
</html>