xserver

[Jianningli]

Hi,
great project. However, i encounter some issues recently using stpyvista.

Locally, it runs well. But when deployed to a server, the 3D model fails to display on the browser on the user end, with the following error:

'this system does not appear to be running an xserver
PyVista will likely segfault when rendering.
Try starting a virtual frame buffer with xvfb, or using

pyvista.start_xvfb()
warnings.warn(

It is strange that some time ago (before update?), the 3D viewer works fine

[edsaac]

I'd assume you are deploying on a headless environment, so you can add this line to the beginning of your python script to create a "virtual framebuffer"

pyvista.start_xvfb()

Also, you will need to have installed xvfb and libgl1-mesa-glx. On Debian:

apt install libgl1-mesa-dev xvfb

---

Check:

• https://docs.pyvista.org/api/utilities/_autosummary/pyvista.start_xvfb.html
• https://docs.pyvista.org/user-guide/jupyter/panel.html#configuration-considerations

[Jianningli]

Hi,

Thanks for the fast reply.

It works after adding pyvista.start_xvfb() and the libgl1-mesa-dev & xvfb packages.