Hi @allison sorry for the late reply.
Yes everything was built up as I was using Geant4 since a while without any difficulties.
This ‘crash’ to be honest came without any big error messages. Other than the fact that ‘wayland’ is not supported or something like that. Upon investigation and googling I found that the ‘XDG_SESSION_TYPE=x11’ can be of help. After enabling the x11 session type, the display is working well. I am not sure, if I call this as a ‘solution’, but definitely this workaround works for me.
