I too have fallen victim to the same confusing package names before (I now remember):
ubuntu-desktop-mir: Legacy fullscreen XMir ubuntu-desktop-next: Unity8 login (not totally usable yet but will evolve into proper Unity8). ubuntu-desktop-mir used to work, but the XMir extension has been rewritten recently. Just retested this on vivid myself and got some flickering, stuttering, crash, reverted back to regular X. Don't expect ubuntu-desktop-mir to work. And even if we did fix it, no fix for that would get backported to Ubuntu 14.10. You're encouraged to try out and log bugs against ubuntu-desktop-next though... ** Changed in: mir Status: Incomplete => Won't Fix ** Also affects: xorg-server (Ubuntu) Importance: Undecided Status: New ** Also affects: xmir Importance: Undecided Status: New ** Summary changed: - [utopic] Black screen on boot (radeon) + [utopic] Black screen on boot (radeon) with ubuntu-desktop-mir (XMir) ** Changed in: mir Status: Won't Fix => Incomplete ** Changed in: mir Status: Incomplete => Invalid ** Tags added: xmir -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1420123 Title: [utopic] Black screen on boot (radeon) with ubuntu-desktop-mir (XMir) To manage notifications about this bug go to: https://bugs.launchpad.net/mir/+bug/1420123/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp