Lenovo ThinkPad X1 Carbon (Gen 4) - ArchWiki

# 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

### UEFI

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

### Support

Device | Working
Intel graphics | Yes
Wireless network configuration#iwlwifi | Yes
Mobile broadband | ??
ALSA | Yes
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.

## Configuration

### Display

There are two options for displays:

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

HDMI: Works

Mini DisplayPort: Works

### OneLink+

RJ45-Adapter: Works

#### Dock

Ethernet: Works

DisplayPort: Works

Audio: Works

VGA: Works

### WiFi

There are several cards used:

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

#### Bluetooth

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

### WWAN

There are several cards used

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

## See also

- Installing and configuring arch linux on thinkpad X1 Carbon (Gen 4), complete guide

Category:

- Lenovo