"It does work, but not out of the box; try this:
https://trisquel.info/en/wiki/installing-virtualbox and you may have to repeat the same steps after updates sometimes." These steps don't work for me unfortunately."I think that's a good idea. I tried out qemu once, but I was never able to figure out how to make it work. I'm sure I'm not the only one." You are not. I'm having the same problem. Qemu seems to be a bit complicated to use, which is why I'd prefer to use VirtualBox if possible.