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Note GL configuration for (legacy) NVIDIA drivers 

Forum: Installation and Configuration
Date: Jan 28, 11:41
From: Andrea <Andrea>

The G4 configuration script usually located in /path/to/geant4.10.05-install/bin adds to LD_LIBRARY_PATH /usr/lib64.

In my system - CENTOS7 with graphic card NVIDIA GT218 [GeForce 210] and proprietary NVIDIA 340xx legacy binary OpenGL X11 display driver files - the above configuration causes any application using GL to fail to locate the appropriate GL driver, e.g., glxgears.

*** Correct configuration (glxgears works):
$ ldd /usr/bin/glxgears 
... => /usr/lib64/nvidia/ (0x00007f051657f000)

*** Wrong configuration:
$ ldd /usr/bin/glxgears 
... => /usr/lib64/ (0x00007faf1729a000)
$ glxgears
libGL error: No matching fbConfigs or visuals found
libGL error: failed to load driver: swrast
Error: couldn't get an RGB, Double-buffered visual

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