Lenovo ThinkPad X1 Carbon (Gen 4)
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 | Yes |
| ALSA | Yes |
| Touchpad | Yes |
| TrackPoint | Yes |
| Camera | Yes |
| Fingerprint Reader | Yes |
| Power management | Yes |
| Bluetooth | Yes |
| microSD card reader | Yes |
Fingerprint Reader
The fingerprint reader included with this model, 138a:0090 Validity Sensors, Inc, currently lacks an official Linux driver. Synaptics (which has acquired Validity Sensors) has unofficially said that they cannot disclose the protocol, but may possibly release a binary driver.
An open source Linux driver has been protyped by reverse engineering the Windows driver, and then further developed into a package which can be installed with libfprint-vfs009x-gitAUR.
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) - Tested, stable and working.
- Qualcomm Snapdragon X7 LTE-A (Sierra Wireless EM7455) - ??.