Root, OpenGL, X2Go

ROOT
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_ROOT Version:6.20.04
_Platform:Ubuntu 18.04
_Compiler:gcc 7.4

Hello,
has anybody experience using OpenGL within Root in a X2Go session?
When executing an OpenGL tutorial I get:

Error in <TGLWidget::CreateWindow>: No good OpenGL visual found!

The GL example “glxgears” provided by Ubuntu works.
Cheers
Otto

2

The “remote” machine runs Ubuntu 18.04 and what is your “local” machine?
What graphics cards do both machines have?

Can you run “glxinfo” and “glxgers” / “glxheads” / “glxdemo” on both machines, the “remote” and your “local” machine?

On the “remote” machine, you could try some of (there are also graphics card driver specific variables):
export LIBGL_ALWAYS_INDIRECT=1
export LIBGL_ALWAYS_SOFTWARE=1

You can also have a look at: CMSPublic -> OpenGL and X11 problems
and search for graphics card specific solutions, e.g.: Intel graphics

3

Hi Wile,
great, this helps:

Thanks
Otto

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