I booted same machine to XP and symptoms were the same. One sim card worked and the other not. Turns out I needed to update the modem firmware (it's an MC8790 on a FS T5010, go the firmware from Fujitsu). It now works for both cards.
-- Jaunty: UMTS via Sierra: pppd terminates immediately https://bugs.launchpad.net/bugs/374443 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs