The logs are not complete, please include all from modem insertion and to failure. And to me it seems fine:
modem-manager[11952]: <debug> [1350866877.477417] [mm-manager.c:313] check_export_modem(): Exported modem /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1 as /org/freedesktop/ModemManager/Modems/0 modem-manager[11952]: <debug> [1350866877.477544] [mm-manager.c:327] check_export_modem(): (/org/freedesktop/ModemManager/Modems/0): VID 0x12D1 PID 0x1C05 (usb) modem-manager[11952]: <debug> [1350866877.477573] [mm-manager.c:328] check_export_modem(): (/org/freedesktop/ModemManager/Modems/0): data port is ttyUSB2 ** Changed in: modemmanager (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1057186 Title: Modem Huawei E173 works in 12.04 but not in 12.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/modemmanager/+bug/1057186/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs