I hit this issue as well. I fixed it by upgrading colord, gnome-color- manager and argyll from this PPA:
https://launchpad.net/~pmjdebruijn/+archive/gnome-color-manager-release -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1310388 Title: Display calibration hangs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-color-manager/+bug/1310388/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
