Howto: Sun Mobile Broadband e1550 or e620 on Ubuntu Lucid Lynx

Installing usb_modeswitch by itself gets the thing going, but the weird thing that happened to me was that when I boot and login while the usb modem is plugged in, it detects the usb storage but not the modem, I had to unplug and replug the darned thing to get it working (which was very annoying). After some googling I found the following solution which worked perfectly for me.

1. install usb_modeswitch http://www.draisberghof.de/usb_modeswitch/

sudo apt-get install usb-modeswitch usb-modeswitch-data

2. sudo lsusb | grep Huawei

hbalagtas@LucidCore:~$ sudo lsusb | grep Huawei

Bus 001 Device 003: ID 12d1:1001 Huawei Technologies Co., Ltd. E620 USB Modem

3. Note my vendorid = 12d1 and product_id = 1001, yours might be different.

4. Edit /lib/udev/rules.d/40-usb_modeswitch.rules and add the following, taking into consideration the results of the previous command.

# Huawei E620

ATTRS{idVendor}=="12d1", ATTRS{idProduct}=="1001", RUN+="usb_modeswitch '%b/%k'"

5. Reboot your computer and you should be able to setup the modem or if you have it already setup before it should be detected by ubuntu, without having to replug it.