I've tried the Final Beta of Ubuntu 13.10 and this still is a problem. ubiquity will not show it's GUI upon clicking launcher icon or the one on the desktop and the process is active in System Monitor.
I'm using a loopback boot option for the 13.10 and the "Try Ubuntu without Installation" option. Also when I kill ubiquity that I started in terminal with CTRL + \ there is this message: ^\Quit (core dumped) umount: /var/lib/polkit-1/localauthority/90-mandatory.d: not mounted -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1226912 Title: ubiquity starts but does not appear To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1226912/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs