On XO-1.5 with 11.3.0/11.3.1 -- hang during shutdown?

[Anish Mangal]

On Sat, Jun 9, 2012 at 2:22 AM, Walter Bender <walter.bender at gmail.com> wrote:
> On Tue, Jun 5, 2012 at 10:37 AM, Martin Langhoff <martin at laptop.org> wrote:
>> Hi folks,
>>
>> the Dextrose team has been hunting a bug on XO-1.5, on their variant
>> of 11.3.x ("Dextrose 3" or DX3), and they are pointing out that it
>> could be a latent or unreported problem in 11.3.x series. It could
>> also be a problem in their modifications.
>>
>> While they continue to investigate, it is important to hear whether
>> anyone has seen XO-1.5s handing during shutdown, on the "Warnings"
>> screen.
>>
>>  - It seems to affect some units, not all. So far it has been seen on
>> 3 units with SN starting with SHC037 .
>>
>>  - Units affected show the symptoms 2 out of 5 boots.
>>
>>  - Seems to be related to umount of /home failing. Adding sync ; sleep
>> 2; before umount seems to cure it; that's their current workaround.
>>
>>  - Their debugging adventures are documented at
>> http://dev.laptop.org.au/issues/1033
>>
>>  - They will be checking whether the symptoms follow the microSD card
>> or the motherboard, swapping microSD with a "good" unit.
>>
>> Why is this important? When the unit hangs during shutdown, it is left
>> in a condition where it can overheat, potentially damaging the unit.
>>
>> The bottom line: have you seen this issue on XO-1.5 + 11.3.x? Even if
>> ocassionally? Let us know, and join the bug-hunting party.
>>
>> cheers,
>>
>>
>>
>> m
>> --
>>  martin at laptop.org -- Software Architect - OLPC
>>  - ask interesting questions
>>  - don't get distracted with shiny stuff  - working code first
>>  - http://wiki.laptop.org/go/User:Martinlanghoff
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>
> While I haven't seen the exact symptoms described here, I have seen
> some problems here in Chachapoyas. XO 1.5s running 11.3.1. It seems
> that machines that are running for quite some time with very active
> use eventually hang. I grabbed some longs from a Browse session, which
> seems to be the activity running when the crashes happen, but looking
> at the logs, it seems to be something failing at a lower level. See
> http://bugs.sugarlabs.org/ticket/3678
>
> Also, at times, Restart fails to restart.
>

In our specific case (of this problem on an XO-1.5 running dx3), the
hang was occurring even when almost no activity was done, i.e. start
the XO, wait for sugar boot, shutdown the XO.

> -walter
>
> --
> Walter Bender
> Sugar Labs
> http://www.sugarlabs.org
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-- 
Anish | anish at sugarlabs.org