you can update packages on a live session just like on a normal install, just logout/login and you should have a fresh session running on new packages
lubuntu doesn't use unity, so it doesn't trigger this bug either, but you should be able to install unity there -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1741447 Title: Unity / Compiz in a crash loop after login, after mesa updates of 2018-01-04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1741447/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs