QT5.6.3 and KMS/DRM backend is not rendering

[DaneLLL]

Hi,
QT is a 3rdparty implementation and we don’t have much experience in using it. MAy need other users to share experience.

Once issue we have seen is about QT + OpenCV:

Black images with Qt5 and OpenGL

We are building OpenCV without CUDA support (use case requires a multiplatform build), so the file cuda_gl_interop.h is not used in the build. We also tried sudo ln -sf /usr/lib/aarch64-linux-gnu/libGL.so.1.0.0 libGL.so both before and after the build. The issue still persists. The workaround we ended up using is building OpenCV with Qt4 instead of Qt5 (WITH_QT=4 CMake option). Qt4 version provided with L4T 32.2 depends on libGL and not on libGLESv2 like the provided Qt5. The issue does not …

This looks different from this topic. Simply for your reference.