I suspect this issue is caused by the efi-aware grub considering the USB device (your phone) as a boot disk somehow. Re-assigning.
** Package changed: upstart (Ubuntu) => grub2 (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1078525 Title: Boot process grinds to a halt when smartphone is plugged in USB To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1078525/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
