I have tried ModemManager 1.6 series mentioned in comment #18, and Sierra MC7455, Sierra MC 7430 and Telit HE910D work fine with this version. The signal strength issue (bug #1735134) is not observed with this version.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1725190 Title: Please update modemmanager in xenial to the 1.6 series To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1725190/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs