I had a similar problem . After searching in the web i found this https://bugzilla.redhat.com/show_bug.cgi?id=597296#c27
In my case , i do this : identify the process modem-manager with the pid , i type the following cmd kill <pid> ; modem-manager --debug > /tmp/modem-manager-debug.txt 2>&1 I see the famous string "FFFFFFFFFFFFFFFF" that causes crash . ** Bug watch added: Red Hat Bugzilla #597296 https://bugzilla.redhat.com/show_bug.cgi?id=597296 ** Attachment added: "modem-manager-debug.txt" https://bugs.launchpad.net/modemmanager/+bug/1014054/+attachment/3322705/+files/modem-manager-debug.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1014054 Title: Huawei E220 modem will not connect in Ubuntu 12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/modemmanager/+bug/1014054/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
