There is very few differences between modemmanager in Quantal and Raring: http://changelogs.ubuntu.com/changelogs/pool/main/m/modemmanager/modemmanager_0.6.0.0.really-0ubuntu4/changelog but I think I have seen the problem with this modem too.
** Summary changed: - REGRESSION: Mobile broadband not working + [0bdb:1926] REGRESSION: Ericsson H5321 gw not working ** Bug watch added: GNOME Bug Tracker #697781 https://bugzilla.gnome.org/show_bug.cgi?id=697781 ** Also affects: network-manager via https://bugzilla.gnome.org/show_bug.cgi?id=697781 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1167852 Title: [0bdb:1926] REGRESSION: Ericsson H5321 gw not working To manage notifications about this bug go to: https://bugs.launchpad.net/network-manager/+bug/1167852/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs