Does it work properly if you disable autoconnect? I also don't really see anything much from modemmanager. Could you please follow the steps at https://wiki.ubuntu.com/DebuggingModemmanager . And attach the logs here so we can look into what goes wrong? Thanks!
** Changed in: network-manager (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/627883 Title: Two mobile internet sticks conflict -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs