[vtkusers] Segmentation Fault: vtkXOpenGLRenderWindow::MakeCurrent

[Mikhail Pukhlikov]

I'm getting (very often but randomly) segfault on vtkXOpenGLRenderWindow::MakeCurrent

on glXMakeCurrent

Linux, Nvidia, mesa 13.0.3

VTK 7.0

What are possible reasons? How can I deduce it? Thank you!
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