What's the best way to try Unity8 on a x64 PC in Virtualbox? Have downloaded the daily image of 16.04, installed it in virtualbox, and installed the unity8-desktop-session-mir package. I get a Mir option for the greeter on the login page, however nothing happens when I select it. The system freezes, refuses to start, and I need to reboot the machine in virtualbox. Have installed updates and guest additions. Any thoughts? Is there a better way to get Unity8 happening in Virtualbox?