I added MIR staging ppa, and installed mir package.
Now I switched to a different virtual terminal through Ctrl+ALT+F2 / F3, etc. Then I logged in and ran $ mir
Doing that, all I get is a black screen. If I try switching to different terminal, it doesn't work, I think that's something to do with how mir works, I assume. Only black screen. Num Lock works. Have to reset machine.
Mine is Radeon HD 4250 on AMD 880G.

Is that how Mir is supposed to be ran or something else, because I can't find instructions. Thanks.