I had same issue and solved buying a new usb cable. Maybe this is a cable error problem?
-- USB ports: connect-debounce failed, port disabled https://bugs.launchpad.net/bugs/88530 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs