[PyQt] pyQt5.7 and QtQuick

[Louis Simons]

I built and installed PyQT and SIP from scratch on my installation, and now
get a little farther.  I think my Ubuntu default version of SIP wasn't the
latest which was causing weirdness.  I don't get a seg. fault, but I simply
get a white screen with a bunch of errors like the following:

QOpenGLShaderProgram: could not create shader program
QOpenGLShader: could not create shader
QOpenGLShader: could not create shader
shader compilation failed:
""
QOpenGLShaderProgram::uniformLocation( matrix ): shader program is not
linked
QOpenGLShaderProgram::uniformLocation( opacity ): shader program is not
linked
QOpenGLShaderProgram: could not create shader program
QOpenGLShader: could not create shader
QOpenGLShader: could not create shader
...
Xlib:  extension "NV-GLX" missing on display ":0".

I think the last line is key.  I've updated my graphics drivers to the
latest available for my graphics card (NVIDIA 340.98, had 340.96
previously), and I'm pretty sure "NV-GLX" really isn't missing since I can
still run the C++ version of the program.  PyQT QtWidgets still work fine.
It seems to be either something unique to using OpenGL from Python or from
PyQT.  Hoping that someone has seen something like this before and can
point me in the right direction, or at least something new to try.

Thanks,
Louis



On Mon, Oct 10, 2016 at 11:25 AM Sacha Schutz <sacha at labsquare.org> wrote:

> C++ works well. But I m using the Qt SDK installed from the download
> binary.
> Also, Widget from QtWidgets modules was working from pyqt5.
>
>
> 2016-10-10 16:47 GMT+02:00 Louis Simons <lousimons at gmail.com>:
>
> When you were getting the seg. fault, did you try compiling the C++
> program to see if that ran successfully?  It's possible we have the same
> symptoms with different issues.
>
> On Mon, Oct 10, 2016 at 10:45 AM Sacha Schutz <sacha at labsquare.org> wrote:
>
> After upgrading my kubuntu, my Xorg won't start. That's why I reinstall my
> OS.  It seems it was not a problem with my graphics card but with KDM and
> Qt library.
>
>
>
> 2016-10-10 16:41 GMT+02:00 Louis Simons <lousimons at gmail.com>:
>
> Mind if I ask what graphics card and driver versions you're using?  I'm
> really hoping I don't have to do an OS reinstall to straighten this out.
>
> Thanks,
> Louis
>
> On Mon, Oct 10, 2016 at 3:43 AM Sacha Schutz <sacha at labsquare.org> wrote:
>
> Hi Louis,
>
> After reinstalling my kubuntu , everything is now working like a charm. I
> have no clue,  I don't know why.
>
> 2016-10-10 0:12 GMT+02:00 Louis Simons <lousimons at gmail.com>:
>
> I think I am not alone with this bug  :
>
> http://stackoverflow.com/questions/39381009/simple-pyqt5-qml-application-causes-segmentation-fault
>
>
> I made that StackOverflow question and had started a thread on this
> mailing list:
> https://www.riverbankcomputing.com/pipermail/pyqt/2016-September/038082.html.
> Unfortunately, I still haven't been able to resolve this issue.
>
>
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>
>
>
>
> --
> --
> Sacha schutz
> Interne en Biologie moléculaire
> Bioinformaticien
> +33651571606
> dridk.me
> Fork me on github <https://github.com/>
>
>
>
>
> --
> --
> Sacha schutz
> Interne en Biologie moléculaire
> Bioinformaticien
> +33651571606
> dridk.me
> Fork me on github <https://github.com/>
>
>
>
>
> --
> --
> Sacha schutz
> Interne en Biologie moléculaire
> Bioinformaticien
> +33651571606
> dridk.me
> Fork me on github <https://github.com/>
>
>
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