I have sudo apt install virtualbox-qt.
It freezes at “All values valid. Attempting to start VirtualBox…”.
virtualbox is in /usr/bin/virtualbox, virtualboxvm is in /usr/bin/virtualboxvm.

We are working on fixing a lot of things. I will add this to the to-do.

Related to #123 and #5

Hey, i could perhaps be wrong about this, but for anyone reading, i tested this on TLauncher which modifies minecraft which could affect the mod, because i had it happen, so in case this happens: “All values valid. Attempting to start VirtualBox…” then for me what made it work was switching TLauncher to prismLaucher, and have it from there, to make sure also have the fabric loader installed there, and make sure to have java v8 and also to make sure v21 installed on your system.