It is important to first run "sudo stop network-manager" and then "sudo stop modemmanager". Then repeat " sudo killall modem-manager" until it says that no processes were killed, before starting it again with debug.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1114575 Title: Network Manager cannot connect using embedded Dell 5530 Mobile Broadband device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/modemmanager/+bug/1114575/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs