||< LD_LIBRARY_PATH=/usr/local/cuda/lib64:/usr/lib:/pub/lib:/pub/cuda-7.5/lib64:/space/hoyi/1/users/shared/mesa-10.1.3:/usr/lib/x86_64-linux-gnu/mesa:/usr/lib/nvidia-375:/usr/lib/nvidia-387:/usr/lib/nvidia-384|| ||---|| ||> LD_LIBRARY_PATH=/usr/local/cuda/lib64:/usr/lib:/pub/lib:/pub/cuda-7.5/lib64:/usr/lib/nvidia-375:/usr/lib/nvidia-387:/usr/lib/nvidia-384:/usr/lib/x86_64-linux-gnu||
I haven't had an idea how to help further, thus kept quiet.
This is interesting though - and could explain your problems.
First of all, you shouldn't set LD_LIBRARY_PATH at all. The new X2Go Server versions don't do it and you shouldn't either. /usr/lib/x86_64-linux-gnu in there should even be fully redundant and messes with the default linking order. Not just that, but it means that our DT_RUNTIME trick in nxagent, which is supposed to override libX11 linking against a compatibility symlink (libX11 -> libNX11) installed in a specific directory, is not working - hence loading the wrong libX11 library and thus leading to nxagent failing to open its internal display.
Be careful when you mess with stuff with that.
Mihai