Lenovo ThinkPad T440s

This article or section does not follow the
Laptop page guidelines
.
Reason:
Needs a function keys section and the status of hardware components in the hardware table (i.e., entries under "Working?") still need to be populated, preferably by someone who has an actual Lenovo ThinkPad T440s. (Discuss in
Talk:Lenovo ThinkPad T440s
)
Hardware
PCI/USB ID
Working?
Bluetooth (Intel)
8087:07dc
Yes
Bluetooth (Realtek)
0bda:8761
Untested
Webcam (Acer)
5986:026a
Yes
Webcam (Chicony)
04f2:b39a
Yes
04f2:b449
Yes
Webcam (Lite-On)
04ca:7035
Yes
Ethernet
8086:1559
Yes
8086:155a
Yes
Wi-Fi (Intel)
8086:08b2
Yes
Wi-Fi (Realtek)
10ec:818b
Yes
Wi-Fi (Ericsson)
0bdb:193e
WWAN (Sierra)
1199:901f
Yes
1199:a001
NFC
GPU (Intel)
8086:0a16
Yes
GPU (NVIDIA)
10de:1290
Yes
Touchpad
Yes
Touchscreen
04f3:0224
Yes
Trackpoint
Yes
Keyboard
Yes
TPM
Fingerprint reader
138a:0017
Yes
Smart card reader
058f:9540
Yes
SD card reader
10ec:5227
Yes
Audio
8086:9c20
Yes
This article covers the installation and configuration of Arch Linux on a Lenovo T440s laptop.
Installation
Attempting to use Intel Platform Trusted technology (PTT) when booting in UEFI mode can sometimes prevent the
boot loader
's
bootx64.efi
file from being booted. Under
Security > Security Chip
in the ThinkPad Setup program, select
Security Chip Selection > Discrete TPM
and
Security Chip > Inactive
(or
Disabled
).
Firmware
fwupd
does not support this device yet.
UEFI BIOS errors
See
Lenovo ThinkPad T450(s)#UEFI BIOS errors
; the T440s suffers from the same firmware errors as the T450/T450s.
Tweaks
Screen resolution and scaling
In order to use the real dpi value create the file (
/etc/X11/xorg.conf.d/90-monitor.conf
):
/etc/X11/xorg.conf.d/90-monitor.conf
Section "Monitor"
    Identifier             "<default monitor>"
    DisplaySize            309 173    # In millimeters
EndSection
Otherwise the default resolution is set to 96dpi.
If you have a 1920x1080 FHD panel installed and find that text and UI elements are too small, it may interest you to consider using
display scaling
to adjust the size of UI elements to your preference. Integer HiDPI scaling is likely too excessive for a display of this resolution and size, so you will want to consider a fractional scaling solution.
Touchpad
See
T440s Clickpad fix which feels good!
[
dead link
2024-10-12—domain name not resolved]
for a
Touchpad Synaptics
configuration which alters the "annoying" behaviour of the clickpad.
See also the recommended kernel parameter in
Touchpad Synaptics#Touchpad does not work after resuming from hibernate/suspend
.
Updating the BIOS
Warning
Flashing motherboard BIOS is a dangerous activity that can render your motherboard inoperable!
See
Flashing BIOS from Linux#Bootable optical disk emulation
and
Updating the BIOS on my ThinkPad T440
.
Wi-Fi
The kernel's
rtl8192ee
driver for the Realtek Wi-Fi card may have spotty performance, especially when compared to the
iwlwifi
driver for the Intel Wi-Fi card. The
lwfinger/rtl8192ee repository on GitHub
provides an "alternate (vendor) driver for RTL8192EE":
May offer much better performance than the kernel rtl8192ee driver, especially when used as Access Point.
Still, it will, with difficulty, barely surpass 50Mbps of uplink, in the best conditions.
Installation instructions can be found in the repository's
README.md
file. The alternate driver can also be
installed with DKMS
. See
Dynamic Kernel Module Support
for more details.
See also
https://linux-hardware.org/?id=pci:10ec-818b-10ec-001b
.
SD card reader
The
rtsx_pci
driver for the Realtek RTS5227 media/SD card reader does not appear to work for all SD cards. MicroSDXC cards in particular may be problematic. Installing the
rts5227-dkms
AUR
package instead resolves this issue. Note that a reboot is required after installing.
See also
https://linux-hardware.org/?id=pci:10ec-5227-17aa-220c
.
Function keys
This article or section needs expansion.
Reason:
Function keys table needs to be populated. See also
Lenovo ThinkPad T450(s)#Function keys
; the T440s and T450/T450s will likely have the exact same tables since they have basically the same keyboard. This still needs to be confirmed (for good measure). If so, then one section should link to the other (to avoid needless duplication). (Discuss in
Talk:Lenovo ThinkPad T440s
)
Key
Visible?
1
Marked?
2
Effect
The key is visible to
xev
and similar tools.
The physical key has a symbol on it, which describes its function.
See also
ThinkWiki page
Product Specifications Reference (PSREF)
Hardware maintenance manual
User guide