The W840SU is a device by the taiwanese OEM manufacturer Clevo. It is sold as Schenker S403, Tuxedo Book UC1402 and Nexoc B401. A touch version exists as W840SU-T or UT1402. The hardware is configurable and includes an Intel Haswell Core i3/i5/i7, Intel HD 4400 graphics, a 7 mm harddrive, a mSATA device (storage, 3g/LTE modem) and a HDMI output.
Installing Archlinux is straightforward and most of the hardware works out of the box.
To make use of the flightmode button, install tuxedo-wmi from the AUR and load the tuxedo-wmi module. Use xbindkeys to map the key 255 (NoSymbol) to some script that disables wifi and bluetooth and enables the airplane mode LED.
$ cat ~/.xbindkeysrc "sudo /home/user/bin/setAirplane.sh" m:0x0 + c:255 NoSymbol
Enable the LED with:
echo 1 > /sys/class/leds/tuxedo::airplane/brightness
You can automate this by installing the AUR package clevo-airplane-mode.
The webcam needs to be activated by pressing FN+F10, otherwise you do not see the device.
$ lsusb Bus 001 Device 002: ID 8087:8000 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 003: ID 5986:0536 Acer, Inc Bus 002 Device 002: ID 8087:07da Intel Corp. Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Sound mostly works out of the box. Using pulseaudio simplyfies configuration, switching outputs is possible.
The volume control for the microphone is mislabeled and reads Digital in ALSA.
The touchpad works out of the box with the synaptics driver. All current features are supported including two finger scroll, two- and three finger click and optional mouse buttons for the edges. Use synclient for configuration. Four finger recognition and three finger swipe gestures do not seem to work, though.