I had the same problem. The usb modem was detected as CD-ROM. I had to install driver manually and now the modem works fine. See https://askubuntu.com/questions/790490/ubuntu-16-04-usb-modem-detected-as-cd-rom-unable-to-connect
Hope it helps. Jiri Krticka -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1817410 Title: After last software update Huawei 3372H-153 modem is not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1817410/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
