Revisiting this nice thread after my recent 11.0 reinstall. I originally followed the jailme route, but decided to switch to the ssh-based one because having to use xhost felt wrong. But I still seem to need xhost, even when using ssh. Without it, I get an "Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Broadway display type not supported: browser:10.0 Error: cannot open display: browser:10.0" error. I followed the instructions, and don't remember having to use xhost when I last used X11 forwarding (which admittedly was some while back), so I'm wondering what is going on here.