Lenovo ThinkPad S440

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Reason: Stub (Discuss in Talk:Lenovo ThinkPad S440#)

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

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-dkmsAUR for it's ThinkPad OneLink GigaLAN adapter. The module ax88179_178a delivered with the stock kernel does not 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[broken link: invalid section].

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 does not 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

Suspend

Works flawlessly with with pm-utilsAUR 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-toolsAUR and acpid installed and graphics switched to intel gpu, I get over 9 hours battery life.