found a fix upstream, was a issue in error propagation. attached is a patch for ModemManager 1.10 in Bionic / Dingo, and 1.8.2 in Cosmic
** Patch added: "Regression fix" https://bugs.launchpad.net/ubuntu/+source/modemmanager/+bug/1819615/+attachment/5261692/+files/bugfix.diff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1819615 Title: For additional hardware support, modemmanager needs to be upgraded to 1.10 on Bionic To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1819615/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs