If i deactivate and reactivate the Sierra EM7345 inside the bios and reboot to ubuntu 15.04 beta2 with current updates, the card is working again.
So it might be a problem with the power settings/handling by the sierra card?! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1440032 Title: nm-applet is missing the Sierra EM7345 4G LTE To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/1440032/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs