ThinkPad mobile internet
Many Lenovo ThinkPads come with a mobile broadband modem. By inserting a SIM card into the modem, it is possible to use a cellular network to connect to the internet.
The broadband modems in newer ThinkPads use the QMI modem protocol---see this article for more information. These modems will show up as
/dev/cdc-wdm on the filesystem.
It is not yet (September 2014) possible to initialize a QMI modem for use on Linux. Use Windows to activate the modem using Lenovo's activation app (or web search for "Lenovo mobile broadband" for the correct app for your modem). The modem will not work until it has been correctly initialized using the app.
There is a helper script for
qmi-network available on GitHub. Save the script to somewhere in your
$PATH and make it executable, and then review the script. The values of some of the variables might need to be changed, especially
Load the kernel modules
$ modprobe qmi_wwan $ modprobe qcserial
Also read the readme on the GitHub page of the QMI helper for any further prerequisites. In particular, you may need to set the APN provided by your cellular internet provider in
qmi_setup.sh start should start the cellular internet connection.
- Ensure that you have initialized the modem on Windows.