Translation(s): none

DebianOn is an effort to document how to install, configure and use Debian on some specific hardware. Therefore potential buyers would know if that hardware is supported and owner would know how get the best out of that hardware.

The purpose is not to duplicate the Debian Official Documentation, but to document how to install Debian on some specific hardware.

Models covered
lenovo Thinkpad T440s



Works out of the box but with a very strong red tint. To correct, install guvcview and tick "White Balance Temperature, Auto".


Wireless did not work out-of-the box, but required installation of the non-free Debian package firmware-iwlwifi.

Modem (GSM)

Integrated optional Sierra EM7345 4G LTE M.2 Module

Doesn't work directly, dmesg :

The solution is to enable the prefer_mbim option of cdc_ncm module. /etc/modprobe.d/local_t440s.conf :

Solution source and discution arround the issue : link

System Summary


some fragments of the output of lspci -nnk:


Ethernet controller [0200]: Intel Corporation Ethernet Connection I218-V [8086:1559] (rev 04)
Subsystem: Lenovo Device [17aa:2214]
Kernel driver in use: e1000e


Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b2] (rev 6b)
Subsystem: Intel Corporation Dual Band Wireless-N 7260 [8086:c260]
Kernel driver in use: iwlwifi