@Bartosz, thanks for the data, it is extremely helpful. The mode switch is happening, but the ttyUSB* devices don't seem to be appearing. I can't tell why they aren't appearing though. Can you run the following commands and attach all the .log files produced? Please run them when the modem is plugged in but not working.
$ uname -a > uname-a.log $ cat /proc/version_signature > version.log $ dmesg > dmesg.log $ lsmod > lsmod.log $ grep 'usb:v12D1p1003' /lib/modules/`uname -r`/modules.alias > modules-alias.log Thanks again for your help. ** Changed in: linux (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/565058 Title: Lucid: hotplugging Huawei E220 doesn't load 'option' module -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs