ubuntu-phone team mailing list archive

[Thomas Voß <thomas.voss@xxxxxxxxxxxxx>]

On Tue, Mar 22, 2016 at 7:43 PM, Costales <costales@xxxxxxxxxx> wrote:
> Hi!
>
> Testers in rc-proposed are reporting this issue (this is not happen in the
> current stable):
>
> - Open uNav.
> - Center position.
> - uNav is killed (sometimes).
>
> Usually when uNav has a dump, uNav stops the rutine and I can read the issue
> in its log.
> But with this kill, I can't read anything in the app log or in the system
> log either:
> http://paste.ubuntu.com/15409376/
>
> In the PC (desktop 16.04 updated) I saw a weird behavior too. Previously
> uNav gets the position because of the IP. Now I'm getting 2 types of dump
> without any position (but never killed):
>
> qml: [JS] (file:///home/costales/Desktop/unav/index.html:258) Starting
> GPS...
> [0322/100022:ERROR:oxide_access_token_store.cc(30)] Not implemented reached
> in virtual void oxide::AccessTokenStore::LoadAccessTokens(const
> LoadAccessTokensCallbackType&)
>
> or this:
>
> qml: [JS] (file:///home/costales/Desktop/unav/index.html:258) Starting
> GPS...
> *** Error in `/usr/lib/i386-linux-gnu/qt5/bin/qmlscene': corrupted
> double-linked list: 0x09d1ba58 ***
>
>
> I think this is happening when the GPS is not ready and uNav ask for it,
> then the system kills uNav (?).
>

Certainly not :) The straightforward way to debug this is to run uNav
(or its qmlscene invocation) under gdb,
and get a backtrace with symbols. That should give you an immediate
idea whether the app segfaulted or aborted.
In addition, it should give you a very good idea of where in the code
it crashes.

Cheers,

  Thomas

> A few users tried the older version 0.50 in rc-proposed and it is happening
> too.
>
> I filled this bug:
> https://bugs.launchpad.net/canonical-devices-system-image/+bug/1559428
>
> Thanks in advance!
>
>
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