Lenovo ThinkPad X1 Carbon (Gen 4)

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Tip: A great resource for thinkpads is https://www.thinkwiki.org/wiki/ThinkWiki

Model description

Lenovo ThinkPad X1 Carbon, Gen 4.

To ensure you have this version, run dmidecode:

# dmidecode -t system | grep Version

Version: ThinkPad X1 Carbon 4th


Updating the UEFI works like described here: link ThinkWiki BIOS Upgrade/Using UEFI.


Device Working
Intel graphics Yes
Wireless network configuration#iwlwifi Yes
Mobile broadband ??
Touchpad Yes
TrackPoint Yes
Camera Yes
Fingerprint Reader Yes
Power management Yes
Bluetooth Yes
microSD card reader Yes

Fingerprint Reader

An open source Linux driver has been developed by reverse engineering the Windows driver. [1]

The fingerprint reader included with this model `138a:0090 Validity Sensors, Inc` currently lacks an official linux driver. libfprint bugreport. Synaptics (which has acquired 'Validity Sensors') has unofficially said that they cannot disclose the protocol, but may possibly release a binary driver.



There are two options for displays:

  • 14" FHD IPS (1920 x 1080): Works
  • 14" WQHD (2560 x 1440): Works

HDMI: Works

Mini DisplayPort: Works


RJ45-Adapter: Works


Ethernet: Works

DisplayPort: Works

Audio: Works

VGA: Works


There are several cards used:

  • Intel Dual Band Wireless-AC 8260, 2x2
  • Intel WiGig 18260 AC 2x2


All cards feature BT4.1 connectivity and should work out of the box when starting the bluetooth service


There are several cards used

  • 4G LTE (Huawei ME906S)
  • Qualcomm Snapdragon X7 LTE-A (Sierra Wireless EM7455)

See also