Hello, Thank you for replying Thiago. Yes, I can display glxgears over ssh/x11 - not optimal, but at least displays. (gears turn really slow, and framerate reported is high (~1000 FPS)
> Can you switch back to Mesa from the Nvidia drivers and try that? I'm not exactly sure how to do that w/o uninstall of Nvidia drivers, or are there some run-time setting changes just for the app? setting LIBGL_ALWAYS_SOFTWARE=1. didn't help. (but believe expected since Nvidia drivers used) However: I have tried spyder and the other pyqt5/examples/opengl/ on another server (CentOS 7, w/o Nvidia drivers) and also have problems. Though the app **doesn't display at all** in most cases . But some cases it does appear but is so slow it is unusable. (glxgears will display). More details below. For example, VcXsrv has a default setting called "Native opengl" "Use the native windows opengl library (wgl). Make sure to export the LIBGL_ALWAYS_INDIRECT environment variable". This defaults setting seems to work fine for several apps, and I believe is preferred. Its these newer qt5 apps with opengl that appear to be problematic. Between qt 5.6 and 5.9 something changed. Previously spyder used qt4, and I had improved responsiveness when I set QT_GRAPHICSSYTEM=native Though I believe that environment variable is deprecated in qt5. (see links in original message) Results below: VcXsrv Native openGL = on (default, checked) #Result#: Fails. Does not appear. Have to kill processes. libGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: swrast QQuickWidget: Failed to make context current QQuickWidget::resizeEvent() no OpenGL context VcXsrv Native openGL = on LIBGL_ALWAYS_SOFTWARE=1 LIBGL_ALWAYS_INDIRECT=1 #Result#: Fails. Does not appear. Have to kill processes. QQuickWidget: Failed to make context current QQuickWidget::resizeEvent() no OpenGL context VcXsrv Native openGL = on LIBGL_ALWAYS_SOFTWARE=1 #Result#: Fails. Does not appear. Have to kill processes. libGL error: No matching fbConfigs or visuals found libGL error: failed to load driver: swrast QQuickWidget: Failed to make context current QQuickWidget::resizeEvent() no OpenGL context VcXsrv Native openGL = on LIBGL_ALWAYS_INDIRECT=1 #Result#: Fails. Does not appear. Have to kill processes. QQuickWidget: Failed to make context current QQuickWidget::resizeEvent() no OpenGL context VcXsrv Native openGL = off LIBGL_ALWAYS_SOFTWARE=1 #Result#: appears ok. responsive = very slow, unusable VcXsrv Native openGL = off LIBGL_ALWAYS_INDIRECT=1 #Result#: SegFault (expected issues w/this) VcXsrv Native openGL = off #Result#: appears ok. responsive = very slow, unusable Thanks! On Mon, Jul 16, 2018 at 9:09 PM, Thiago Macieira <thiago.macie...@intel.com> wrote: > On Monday, 16 July 2018 16:47:55 PDT charlie hemlock wrote: > > % spyder > > QQuickWidget: Failed to make context current > > QQuickWidget::resizeEvent() no OpenGL context > > QQuickWidget: Failed to make context current > > QQuickWidget: Failed to make context current > > QQuickWidget::resizeEvent() no OpenGL context > > QQuickWidget: Failed to make context current > > QQuickWidget: Attempted to render scene with no context > > QQuickWidget: Attempted to render scene with no context > > composeAndFlush: makeCurrent() failed > > Yep, definitely OpenGL issues. > > Please make sure glxgears works before trying a Qt application. > > Can you switch back to Mesa from the NVidia drivers and try that? If that > isn't enough, try setting LIBGL_ALWAYS_SOFTWARE=1. > > > Using Windows 10, PuTTY, VcXsrv, and the PyQt apps are on a Linux > OpenSUSE > > 42.3 host (nVidia drivers). > > On OpenSUSE, the GL libraries are indirected through libglvnd. I don't > know > how to tell it to load the Mesa raster instead of the NVidia drivers. > > -- > Thiago Macieira - thiago.macieira (AT) intel.com > Software Architect - Intel Open Source Technology Center > > > > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest >
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