FATAL: window and/or OpenGL context creation failed error (Ubuntu)

[Giannis95]

Hi,

I installed GLVis and mfem with spack in ubuntu. I am trying to visualise some meshes with the following command "glvis -m mfem/data/star.mesh" I am getting the following error:

"FATAL: window and/or OpenGL context creation failed"

My OpenGl version is 4.6. I have also build it without spack but the same issue persists. Does anyone had the same issue and/or any suggestion what might be the issue ?

Thank you in advance for any help

[tzanio]

Can you run simple OpenGL applications, like glxgears?

[Giannis95]

Yes, simple applications such xclock, glxgears work

[v-dobrev]

If glxgears works, you can try running GLVis with the extra flag -oldgl.

[Giannis95]

I have tried it, and I still get the same issue that the server is running but when I pass data to it I get that error. I have also tried running the server on a different port, but still I am getting the same error message

[tzanio]

Just to check -- does it work in non-server mode, e.g. ./glvis -oldgl -m ../mfem/data/escher.mesh?

[Giannis95]

hello ! yes it works in non-server mode , however the fonts are not visible just on the escher.mesh. Other meshes suchs as beam-tet.mesh are working with the correct fonts in the non-server mode. Thank you for all the help

[tzanio]

This looks like an OpenGL/SDL/FontConfig issue on your machine... I am not sure what exactly, maybe someone that uses Ubuntu regularly like @najlkin or @v-dobrev can help.

As an alternative, you can use the web version of GLVis both to visualize saved data (from a server run with glvis -saved) or as server, see some instructions here.

[Giannis95]

Thank you