Lenovo ThinkPad Helix
|Form Factor||Tablet/Ultrabook Convertible (detachable keyboard dock)|
|Display||11.6" 1920x1080 LCD with Capacitive and Pen Digitizers|
|CPU||3rd Generation (Ivy Bridge) Core i5-3427U or i7-3667U|
|RAM||4GiB (i5) or 8GiB (i7) DDR3L RAM (dependent upon CPU)|
|Storage||128/160/256GB mSATA SSD|
|WiFi||Intel Centrino Advanced-N 6205S mPCI WLAN|
|Bluetooth||Broadcom BCM20702 Bluetooth 4.0 (USB connected)|
|Camera||5MP Rear and 2MP Front (also USB)|
Due to the fact that there is no optical drive, you need to install Arch from USB stick.
The Arch install media will happily boot under UEFI, so it is recommended to disable legacy boot in the system setup utility. If legacy boot is needed for some reason, it does work fine as well.
To fully support all hardware in X, one needs to ensure that the following driver packages are installed:
- (for the clickpad)
- (for the digitizers)
- (for the GPU)
Nearly everything works fine with no special configuration. The sensors (accelerometer, gyroscope, magnetometer, ambient light sensor) don't seem to be recognized yet.
If the Broadcom USB device isn't showing up, you likely need to turn it on with
echo 1 > /sys/devices/platform/thinkpad_acpi/rfkill/rfkill0/state
The Lenovo Helix comes with the following input devices (the ids may not be the same on your system):
$ xinput list ⎡ Virtual core pointer id=2 [master pointer (3)] ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)] ⎜ ↳ Wacom ISDv4 EC Pen stylus id=15 [slave pointer (2)] ⎜ ↳ Atmel Atmel maXTouch Digitizer id=16 [slave pointer (2)] ⎜ ↳ SynPS/2 Synaptics TouchPad id=18 [slave pointer (2)] ⎜ ↳ TPPS/2 IBM TrackPoint id=19 [slave pointer (2)] ⎜ ↳ Wacom ISDv4 EC Pen eraser id=21 [slave pointer (2)]
The Wacom ISDv4 EC Pen stylus xinput device is recognized by the driver out of the box. However, additional Udev and Xorg configuration is required to recognize the Atmel Atmel maXTouch Digitizer touchscreen device as well as Wacom ISDv4 EC Pen eraser input if using a pen with an eraser function.
With an up-to-date Arch install, install the following packages:
The Udev rules. The is needed by some graphics applications to see the additional inputs.AUR package installs the additional
Udev should automatically detect the changes if already running. But, you may want to reboot your system to verify the changes stick.
Additionally, you may want to read the Wacom_Tablet#Dynamic_with_udev section to ensure the two wacom input devices are found. On this Helix system, it looks like this:
$ ls -l /dev/input/wacom* lrwxrwxrwx 1 root root 6 Jan 20 15:32 /dev/input/wacom -> event5 lrwxrwxrwx 1 root root 6 Jan 20 15:32 /dev/input/wacom- -> event5
These two inputs are the pen and eraser, respectfully.
You can also see if the touchscreen was detected properly:
$ ls -l /dev/input/tablet-* lrwxrwxrwx 1 root root 6 Jan 20 15:32 tablet-tpc-ec- -> event5
With these three inputs, you can continue to the next section to configure Xorg.
Now, you'll need to tell Xorg to use the new inputs. The driver package has an up-to-date list of devices that the Helix has. But, the package does not install the updated list by default. You'll need to copy it for Xorg to see them:
# cp /usr/share/X11/xorg.conf.d/50-wacom.conf /etc/X11/xorg.conf.d/
Once done with all the above, reboot and you verify
xinput list looks the same as the above.
Touchscreen / Wacom Tips & Tricks
If you find yourself frustrated by the capacitive digitizer while trying to use the pen, there are a few AUR packages that may be of interest.
helix-toggle-touch, which will toggle the capacitive digitizer on and off with a simple command. It also installs a
desktop file for Gnome that can be used to toggle xinput on and off with the pen.
If you have both digitizers configured through the xf86-input-wacom driver, they will automatically rotate with the display and you can use a simple command like
xrandr --output eDP1 --rotate left to rotate the screen with ease.
If you want to use the bezel buttons (or some other hotkey) to cycle through orientations (or toggle between two specific ones),
helix-rotate, also from from AUR, provides an easy-to-bind command that may serve your needs well.
There is also Magick Rotation, which is supposed to automatically rotate the screen based on input events, but it only seems to respond to docking/undocking the tablet.
Helpfully, Lenovo now provides bootable ISO images for the purpose of installing BIOS updates. While it is not stated on their site, these bootable images also include updated firmware for the keyboard dock MPU. It is uncertain as to whether the USB hub firmware is also updated via this utility.
If you do not have access to a USB optical drive and writable media, the information on ThinkWiki is extremely helpful.