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 Touch seeded packages, which is subscribed to modemmanager in Ubuntu. https://bugs.launchpad.net/bugs/1725190 Title: Please update modemmanager in xenial to the 1.6 series Status in OEM Priority Project: Confirmed Status in modemmanager package in Ubuntu: In Progress Bug description: We would like to upgrade xenial to 1.6 series so it supports the same modems as the modem-manager snap, specifically some new Sierra modems (HL8548 and others from HL series, popular in IoT devices). These are the packages that would need to be updated: libmbim: 1.12.2-2ubuntu1 in xenial, 1.14.0 in snap libqmi: 1.12.6-1 in xenial, 1.16.2 in snap modemmanager: 1.4.12-1ubuntu1 in xenial, 1.6.2 in snap This is also related to bug #1693756 which includes a subset of patches of what would be updated. To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1725190/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp