I have the same problem with my HUAWEI E156G HSDPA USB Stick I will attach the output from the syslog log file after attaching the USB stick and the output of "lsusb -vv"
** Attachment added: "syslog.log" https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/825832/+attachment/2538276/+files/syslog.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/825832 Title: Modem E156G not woking modem-manager loop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/825832/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs