[maemo-developers] N950 SEGFAULT - help?

[From: Nicolai Hess]

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

> Unfortunately It didn't do the trick.... I can't tell any difference
> ...still crashes with the QPainter::save()....
>
> Please let me know if any of you have any more ideas... I will play a
> little more tomorrow.
>
> Felipe
>
>
> 2011/11/5 Kristóf Timur <timur at sch.bme.hu>
>
>>   That’s not how it’s done.
>>
>> 1. In your .pro file, add:
>> QT += opengl
>>
>> 2. at the top of your cpp, add:
>> #include <QGLWidget>
>>
>> 3. when you initialize your QDeclarativeView:
>> QGLWidget glWidget;
>> QDeclarativeView view;
>> view.setViewport(&glWidget);
>>
>> Cheers,
>> Timur
>>
>>  *From:* Felipe Crochik <felipe at crochik.com>
>> *Sent:* Saturday, November 05, 2011 11:26 PM
>> *To:* nicolaihess at web.de
>> *Cc:* maemo-developers <maemo-developers at maemo.org>
>> *Subject:* Re: N950 SEGFAULT - help?
>>
>> 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
>>>>> >
>>>>> >
>>>>>
>>>>
>>>>
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>>>> maemo-developers at maemo.org
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>>>>
>>>>
>>>
>>
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>

Can you give a link to your source.

nicolai
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