[maemo-developers] N950 SEGFAULT - help?

[From: Nicolai Hess]

2011/11/5 Felipe Crochik <felipe at crochik.com>

> Nicolai,
>
> I tried the application using (I assume that is what you meant):
> QApplication::setGraphicsSystem("opengl");
>
> and haven't been able to crash the application but it gets really slow and
> unresponsive. Also I get these error messages on my log:
>
> Valid eglHandle received but not running with meego compatible
> graphicssystem.
>
> Any ideas?
>
> Thanks,
> Felipe
>
>
>
> 2011/10/7 Nicolai Hess <nicolaihess at web.de>
>
>> Have you tried to use a QGLWidget for the qmlviewer ?
>> This works for the QML Camera element which has the
>> same behavior, segfaults when application moved to background.
>>
>>
>> 2011/10/7 Felipe Crochik <felipe at crochik.com>
>>
>>> That is the "next" problem. They are not available - maybe I need to add
>>> some extra repository? sorry if I missed some obvious "development"
>>> required step.... It is hard to start over!
>>>
>>>
>>> 2011/10/7 Daniil Ivanov <daniil.ivanov at gmail.com>
>>>
>>>> apt-get install libqtwebkit4-dbg
>>>> or
>>>> apt-get install libqt4-webkit-dbg.
>>>>
>>>> 2011/10/7 Ивайло Димитров <freemangordon at abv.bg>:
>>>> > Why not install Qt debug symbols on the device and run/attach to your
>>>> > program there under gdb?
>>>> >
>>>> >
>>>> >
>>>> > -------- Оригинално писмо --------
>>>> > От: Felipe Crochik
>>>> > Относно: N950 SEGFAULT - help?
>>>> > До: maemo-developers at maemo.org
>>>> > Изпратено на: Петък, 2011, Октомври 7 05:20:55 EEST
>>>> > I hit a wall with my application so I am looking for someone to help
>>>> > everywhere I can.
>>>> >
>>>> > The short version: how can I get qt creator to debug my application
>>>> on the
>>>> > device. Right now I get CRC mismatch warnings for all libraries and I
>>>> assume
>>>> > this is what prevents me to see any trace information
>>>> >
>>>> > That is what I get when I start to debug:
>>>> > ...
>>>> > the debug information found in
>>>> >
>>>> "c:/qtsdk/madde/sysroots/harmattan-nokia-meego-arm-sysroot-1134-slim/usr/lib/libpvrPVR2D_DRI2WSEGL_r125.so"
>>>> > does not match
>>>> >
>>>> "c:/qtsdk/madde/sysroots/harmattan-nokia-meego-arm-sysroot-1134-slim/usr/lib/libpvrPVR2D_DRI2WSEGL.so"
>>>> > (CRC mismatch).
>>>> >
>>>> > the debug information found in
>>>> >
>>>> "c:/qtsdk/madde/sysroots/harmattan-nokia-meego-arm-sysroot-1134-slim/usr/lib/libpvr2d_r125.so"
>>>> > does not match
>>>> >
>>>> "c:/qtsdk/madde/sysroots/harmattan-nokia-meego-arm-sysroot-1134-slim/usr/lib/libpvr2d.so"
>>>> > (CRC mismatch).
>>>> >
>>>> > ...
>>>> >
>>>> > I assume I need to install "debug symbols/versions" for the qt
>>>> libraries on
>>>> > the device somehow. Am I right? How can I accomplish this?
>>>> >
>>>> > The long version:
>>>> >
>>>> > My applications uses qml\webview and everything works fine until I
>>>> swipe out
>>>> > of my application and then later come back to it. With one click or
>>>> two I
>>>> > get a segfault. This is all the information that I managed to get
>>>> running
>>>> > gdb on the device:
>>>> >
>>>> > (gdb) backtrace
>>>> > #0  0x42068924 in QPainter::save() () from /usr/lib/libQtGui.so.4
>>>> > #1  0x48ec294c in ?? () from /usr/lib/libQtWebKit.so.4
>>>> > #2  0x48ec294c in ?? () from /usr/lib/libQtWebKit.so.4
>>>> >
>>>> > Program received signal SIGSEGV, Segmentation fault.
>>>> >
>>>> > Any suggestions?
>>>> >
>>>> > Thanks in advance,
>>>> > Felipe
>>>> >
>>>> > _______________________________________________
>>>> > maemo-developers mailing list
>>>> > maemo-developers at maemo.org
>>>> > https://lists.maemo.org/mailman/listinfo/maemo-developers
>>>> >
>>>> >
>>>>
>>>
>>>
>>> _______________________________________________
>>> maemo-developers mailing list
>>> maemo-developers at maemo.org
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>>>
>>>
>>
>
No I mean use a QGLWidget for your declarativeview like:

viewer->setViewport(new QGLWidget());
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