Lenovo ThinkPad X140e

Lenovo ThinkPad X140e
Overview
Introduced	2013
Manufacturer	Lenovo
Overall Dimensions	11.6" W x 8.5" D x 1.38" H
Weight	3.92 lb
Colors Available	Black Red
Motherboard
Soldered CPU Options	E1-2500 A4-5000
Chipset	None (Kabini is an SoC)
GPU Options	Integrated GCN - HD 8240 (if E1-2500) Integrated GCN - HD 8330 (if A4-5000)
Embedded Controller	ITE IT8518 (QUANTA_IT8518)
Memory	2 slots (1 channel) SODIMM - up to 16GB DDR3-1600 if A4-5000, DDR3-1333 if E1-2500
BIOS Flash	4 MiB soldered SOIC-16
Power
AC Adapter	65W 20V Lenovo ThinkPad barrel jack power adapter
Battery	Removable 6-cell 62.4 Wh Li-ion (Lenovo 35+)
Human Interface
Display	11.6" 1366x768 (16:9)
Keyboard	40-series ThinkPad 6-row
Pointing Devices	UltraNav multitouch touchpad ThinkPad TrackPoint (full-size cap)
Webcam	1280x720 wide-angle
I/O
Expansion Slot	Half-Length mPCIe (for WLAN)
Storage	2.5" 7mm 6Gbps SATA bay
Ethernet Interface	Gigabit Realtek RTL8111F
Factory WLAN Card	Various
USB Ports	2x USB3 1x always-powered USB2
Audio Interfaces	Integrated speaker and microphone 3.5mm combo headset jack
Display Outputs	1x HDMI 1x VGA
Memory Card Reader	Full-size SD card slot

The Lenovo ThinkPad X140e is an 11.6" laptop using AMD's fam16h Kabini SoCs.

Open Source Firmware

Open source firmware for the X140e is provided by coreboot-15h utilizing AMD's open source AGESA release for platform initialization. The git repository for the firmware can be reviewed here.

coreboot-15h

Release	Notes	Download Options
2026.03.29-v4.18-7ebae77863	Added support for boards with the A4 CPU Enabled PCIe power saving features	SeaBIOS + uCode + APU-OpROM 4MB
2026.03.26-v4.18-ff66166ebf	Partial support for Fn hotkeys Added memtest and coreinfo payloads	SeaBIOS + uCode + APU-OpROM 4MB
2026.03.20-v4.18-60f79fa1ed	Fixed speakers All USBs are bootable	SeaBIOS + uCode + APU-OpROM 4MB
2026.03.15-v4.18-7f0a560c9f	Initial release	SeaBIOS + uCode + APU-OpROM 4MB

Missing Features

• Fn keys for microphone, headset, display, and brightness hotkeys do not work
• SeaBIOS can not boot from the SD card
• memtest86+ only responds to the onboard keyboard
• coreinfo only responds to USB keyboards
• FreeBSD requires the S3_VGA_ROM_RUN coreboot option for resume support in radeonkms
  • S3_VGA_ROM_RUN does not work with Linux
  • Release ROMs have S3_VGA_ROM_RUN disabled

Flashing

To switch from the stock firmware to coreboot, external flashing is required. Before switching to coreboot, make sure you are using the latest OEM BIOS to ensure the latest EC firmware is on your device. The SOIC-8 flash chip is easily accessible from the bottom of the laptop. With the rear panel removed (3 screws), the flash chip is under a piece of black tape and next to the RAM. A Pomona 5250 clip is recommended over generic clips to avoid colliding with the chassis frame. A 3.3V programmer should be used; flashrom will need the "-c W25Q32FV" argument to flash the chip. The CMOS should be cleared when switching to coreboot, the battery is next to the flash chip and can be disconnected to wipe the CMOS.

Debugging

This laptop does not have a serial port. Because of this, the most practical way to get debug output from coreboot is via EHCI Debugging. Connect your EHCI debugging device to the yellow always-powered USB 2.0 port immediately next to the power input jack.