Does your system hangs also if you power-up with a device connected to USB-3.0 port and disconnect it when BIOS asks for power-upp password (this would suggest that the error is associated with the information about state of the system prepared by BIOS)?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/978891 Title: ubuntu 12.04 doesn't boot when usb device plugged in (except usb mouse) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/978891/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs