Traditionally virtual tty 1 through 6 were text terminal. So X used the 7th, that’s why some older forums tells you to go there.

Nowadays, the graphical session manager will spawn on vtty 1, and sessions will dynamically use the others. So on a mostly single user computer, Ctrl+alt+F2 is likely to work. With multiple users, you can actually switch users or come back to the session manager this way.

If you switch to an unused vtty, systemd will spawn a text login prompt. And when you login, some logind dark magic makes the system realize your are entitled to hear the audio output of your application still running on your graphical session.

Valheim uses proton? I’m pretty sure it ran natively a few years back.

The explanation don’t explain why AE must be a diameter of the circle. What makes that obvious?

One of the main developers presented this project at FOSDEM.

https://fosdem.org/2025/schedule/event/fosdem-2025-6196-rewriting-the-future-of-the-linux-essential-packages-in-rust-/

(He is a Mozilla employee but made a point to tell it was not affiliated with Mozilla and was working on it on his spare time)