I have the same device and exactly the same problem on my laptop - a Fujitsu T2010.
Applies to 9.04 & 9.10 (just updated). I also used the latest driver from Sierra (1.7.12) to make sure that I was not suffering from the wrong driver (installed by default 1.3.x). Only used 8.10 briefly, but I too was able to use the modem after the NM was updated. I am seriously thinking that I will have to reinstall a Windows partition to allow me to use the device as I am paying a monthly plan on Virgin Mobile (Australia) I have attached the files showing the syslog, lsusb & modinfo details. ** Attachment added: "syslog output" http://launchpadlibrarian.net/35011220/SierraModemFailure.syslog -- Sierra MC8780 not working https://bugs.launchpad.net/bugs/376361 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