#0  0x00007f1e7b46eb04 in glGetString () from /tmp/apport_sandbox_laPLHZ/usr/lib/nvidia-340-updates/libGL.so.1
#1  0x00007f1e7dab25da in QOpenGLContext::makeCurrent(QSurface*) () from /tmp/apport_sandbox_laPLHZ/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#2  0x00007f1e7e040693 in QSGRenderThread::run() () from /tmp/apport_sandbox_laPLHZ/usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007f1e7d1467ce in QThreadPrivate::start(void*) () from /tmp/apport_sandbox_laPLHZ/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1e7b18166a in start_thread (arg=0x7f1e26dc9700) at pthread_create.c:333
  [Error: pthread_create.c was not found in source tree]
#5  0x00007f1e7c84601d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
  [Error: clone.S was not found in source tree]