[Linux] [Flatpak] Window opens, then immediately closes. How to debug?

[trusktr]

Hello, I installed this Flatpak:

https://flathub.org/apps/io.github.RobertBeckebans.RBDoom3BFG-GL

I placed the base/ folder where it should be.

When I run the app, the window pops open for a brief moment with a black empty background, then closes. Looks like there's some error.

How can we figure out what's wrong?

[trusktr]

I tried the other one for vulkan/wayland,

https://flathub.org/apps/io.github.RobertBeckebans.RBDOOM-3-BFG

and got a little further. It mentioned it was patching the base files, but then after that the window exited. I'm in X11 with Nvidia, so maybe that's why in this case.

[SRSaunders]

You should use the more modern one: https://flathub.org/apps/io.github.RobertBeckebans.RBDOOM-3-BFG

Can you please start the game from the command line and post the console output?