Could not create a GL context

[luzz-dev]

For some reason the f3d_viewer.py that comes bundled with the program is not able to create a GL context and therefore the screen of the viewer area goes black.

I tried compiling it, here is the error:

10:58:52 (f3d_viewer.py:225) CRITICAL: Could not create GL context

I installed f3d from their flatpak repo yet that one seems to work fine at displaying models.

Here is my setup (I am using x11 with an Nvidia GPU):

OS: Fedora Linux 40 (Workstation Edition) x86_64
Kernel: Linux 6.10.3-200.fc40.x86_64
Display (VG27A): 2560x1440 @ 120 Hz in 27″ [External] *
Display (VG27A): 2560x1440 @ 120 Hz in 27″ [External]
DE: GNOME 46.4
WM: Mutter (X11)
Theme: Adwaita [GTK2/3/4]
CPU: 11th Gen Intel(R) Core(TM) i5-11400F (12) @ 4.40 GHz
GPU: NVIDIA GeForce RTX 3060 [Discrete]
Memory: 15.48 GiB
Swap: 8.00 GiB

Here is the complete log: builder.log

[Nokse22]

If you open the about dialog and then the troubleshooting>debugging information section, do you have GDK_DEBUG: gl-egl:gl-prefer-gl?

Also try to run flatpak override --env=GDK_DEBUG=gl-prefer-gl io.github.nokse22.Exhibit or make sure with Flatseal that you have set GDK_DEBUG=gl-egl and gl-prefer-gl

This usually happens because Nvidia GPUs need to know to use GL instead of GLES before running the app and can't switch after

Related #14

[luzz-dev]

Also try to run flatpak override --env=GDK_DEBUG=gl-prefer-gl io.github.nokse22.Exhibit or make sure with Flatseal that you have set GDK_DEBUG=gl-egl and gl-prefer-gl Related #14

This fixed it. Thank you. Hope they fix this Nvidia bug upstream soon.

[Nokse22]

Great! 🎉