Comment 14 for bug 490068

Sorry for making this become a support forum.

Donny, are you sure you're using option module with your modem?

Try:

lsmod | grep option

See if the option module is actually loaded, and you're not using usbserial instead.

Also syslog messages and dmesg might help.

In my system, I don't need to do modprobe. Maybe there's some other hardware issue in your computer conflicting with Haier CE100 "auto-detection".