Lenovo ThinkPad S440

This article was written to assist you with getting archlinux run on the Lenovo ThinkPad S440.

Prerequisites

Creating an installation medium

To create a bootable USB-Stick with the archlinux*.iso you downloaded, simply:

 dd bs=4M if=archlinux*.iso of=/dev/sdX && sync

which will/should behave like a regular bootable CD-Rom in addition to a capable BIOS and the correct bootsequence! In doubt or in case of problems see Install from a USB flash drive for more detailed instructions.

Enable Legacy Boot

On boot press F12 to enter the BIOS menu and choose your USB-Stick to boot from. If you like, you can disable UEFI boot completely in the BIOS settings too.

Installation

After that it is recommended to follow the usual installation procedure described in the Installation guide.

LAN

Works out of the box with module r8169.

If you use Lenovo's Thinkpad OneLink Dock you need asix-ax88179-dkms^AUR for it's ThinkPad OneLink GigaLAN adapter. The module ax88179_178a delivered with the stock kernel doesn't work.

WLAN

Works out of the box with module iwlwifi.

Audio

Works out of the box with module snd-hda-intel.

Video

The S440 comes with ati intel hybrid graphics. Currently the best implementation for i915/ fglrx hybrids is found in the unofficial catalyst repository.

You can switch between the two drivers with on of the following commands:

 # intel
 aticonfig --px-igpu

 # ati
 aticonfig --px-dgpu

If you encounter tearing in video playback when using Intel graphics (some S440 variants come without dedicated ATI chip), try enabling the Intel drivers' "TearFree" option.

Touchpad

A synaptics touchpad with two-finger scrolling. Install xf86-input-synaptics to get it running with multi-touch gestures.

Frequency scaling

Work well with cpupower as described in CPU Frequency Scaling. Be aware, that the ondemand governer doesn't work with i7 4500M atm. I choose powersave as default.

Webcam

Works out of the box with uvcvideo.

Keyboard backlight

Currently the thinkpad_acpi module does not support to turn the keyboard backlight on. But you can turn it off with:

 echo 0 > /sys/devices/platform/thinkpad_acpi/leds/tpacpi::thinklight/brightness

Fingerprint scanner

To get that working you need fprintd and libfprint-vfs5011-git^{AUR[broken link: archived in aur-mirror]}. Follow the Fprint guide for the rest.

Suspend

Works flawlessly with with pm-utils^AUR or any DE integration. If resuming from suspend works once but not a second time, try disabling Intel's Anti-Theft module in BIOS (see this kernel bug report).

Power consumption

With cpupower, laptop-mode-tools^AUR and acpid installed and graphics switched to intel gpu, I get over 9 hours battery life.