[Server-devel] Issue with 2 B4s and a C2

John Watlington wad at laptop.org
Thu Jul 3 11:07:40 EDT 2008


Looking at the logs, the server is seeing some of the laptop's DHCP  
discovery
attempts, and responding properly.   The laptop doesn't seem to be  
seeing the
responses reliably (sometimes it responds with a REQUEST, sometimes  
it doesn't).
If it requests the assigned address, sometimes it doesn't seem to  
receive the ACK.
You definitely have an RF problem, either interference from other
sources or poor receive sensitivity on that laptop.

John

On Jul 3, 2008, at 2:38 AM, David Leeming wrote:

> Hi Martyn,
>
> 75 other C2s are awaiting customs clearance so I should be able to  
> check it
> it's a case of bad antennas next week.
>
> Attached is the tarball requested, from the XO, plus /var/log/ 
> messages from
> the server
>
> David Leeming
> Technical Advisor, People First Network
> Tel: +677 76396(m) 24419(h) 26358 (w)
> www.leeming-consulting.com
>
> -----Original Message-----
> From: Martin Langhoff [mailto:martin.langhoff at gmail.com]
> Sent: Thursday, 3 July 2008 8:02 a.m.
> To: David Leeming
> Cc: Phill Hardstaff; Ian Thomson; Pia Waugh; XS Devel
> Subject: Re: Issue with 2 B4s and a C2
>
> On Wed, Jul 2, 2008 at 4:22 PM, David Leeming
> <leeming at pipolfastaem.gov.sb> wrote:
>> OK - the problem is intermittent because about 1 out of every 10  
>> boots,
> the
>> C2 does find the school mesh. I am close to the antenna, and using  
>> the B4s
>> as controls. They are all set up identically and I reinstalled the C2
>> several times to be sure.
>
> That might be dodgy antenna connectors :-(
>
>  - does that machine network correctly otherwise?
>  - have you got any other C2 machine to test? Can we ship you another
> machine?
>
>> How can I generate and locate the tarball on the C2? Can't find  
>> the info
> on
>> the wiki.
>
>  - control-alt-f1 to get to the root shell console
>  - execute the olpc-netlog command - it will create a file called
> logs.<serialnumber>.<date>.tar.bz
>  - plug a usb stick to the machine, wait a few seconds, it'll show up
> in the /media/ directory under a made up name
>  - copy the file there from the commandline:
>    cp logs.XXXXX-YYYY.tar.bz2 /media/ZZZZZ/
>
> and then you can unmount the disk (do that from the journal). Take the
> usb disk to another machine, and email it :-)
>
> cheers,
>
>
>
> m
> -- 
>  martin.langhoff at gmail.com
>  martin at laptop.org -- School Server Architect
>  - ask interesting questions
>  - don't get distracted with shiny stuff - working code first
>  - http://wiki.laptop.org/go/ 
> User:Martinlanghoff<logs.SHF81202922.2008-07-03.06-36-39.tar.bz2><mess 
> ages>_______________________________________________
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