Created attachment 437 [details] Log of exampleB1. Hello, I have installed Geant4 10.3.0 on macOS (10.12.2) with -DGEANT4_USE_OPENGL_X11=ON, but the G4 prompt did not return after /vis/viewer/create was issued when running exampleB1. The CPU usage went up to 99.8% and no viewer window popped up. I had to kill it by cntl-C. ----- # Use this open statement to create an OpenGL view: /vis/open OGL 600x600-0+0 /vis/sceneHandler/create OGL /vis/viewer/create ! ! 600x600-0+0 Session terminated. ----- The log of exampleB1 is attached. This happened for the other exampleB*. Your help would be highly appreciated. Best, -- Kazuhito
I too am on MaxOS 10.12.2 with Geant4 10.3.0 and with -DGEANT4_USE_OPENGL_X11=ON and all's OK. I'm also using the latest XQuartz 2.7.11 (xorg-server 1.18.4). Some intermediate versions of XQuartz from about 2.7.8 had problems with OpenGL. Please try updating XQuartz.