Lenovo ThinkPad Yoga 12 - 20DK

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General Specs

  • Model Number: 20DK
  • Processor: Intel core i7-5600U CPU
  • Memory:8 GB
  • HDD:256GB SSD disk
  • Graphics:Full HD
  • Release Year: 2014/2015


Component Name HardwareID Status Driver
Processor Intel core i7-5600U CPU Check.gif ACPI
HDD Intel Wildcat Point-LP SATA Controller [AHCI Mode] 8086:9C83 Check.gif OS2AHCI
Audio Intel Broadwell-U Audio Controller 8086:160C Check.gif UNIAUD
Audio Intel Wildcat Point-LP High Definition Audio Controller 8086:9CA0 Nope.gif
Video Intel HD Graphics 5500 8086:1616 Check.gif Panorama
Wireless Network Intel Wireless 7265 8086:095B Nope.gif
Wireless Bluetooth Intel Dual Band Wireless-AC 7265 802.11ac, 2 x 2 Wi-Fi and Bluetooth adapter 8087:0A2A Nope.gif Not Supported
USB 2.0 Intel Wildcat Point-LP USB EHCI Controller 8086:9CA6 Check.gif Lars' USB Drivers Version 232
USB 3.0 - Nope.gif Not Supported
SD/MMC slot Realtek RTS5227 PCI Express Card Reader 10EC:5227 Nope.gif Not supported
Touch screen - USB Synaptics Touch Digitizer V04 06CB:7244 Check.gif USBECD, Pen and Touch for Thinkpad Yoga 12 Utility
WebCam - USB CON51200X Integrated Camera 1BCF:2C79 Check.gif UVC Webcam Support
Sensor - USB STMicroelectronics ST_SENSOR_HUB 0483:91D1 Nope.gif Not supported
Digitizer Tablet/Pen - USB Tablet ISD-V4 056A:00EC Check.gif USBECD, XSMOUSE, , Pen and Touch for Thinkpad Yoga 12 Utility
UEFI boot Nope.gif Not Supported. Works with Legacy mode ON.

General Comments

Sigurd tested this Thinkpad with ArcaOS 5.0.4. His comments are:

  • The usual settings in the BIOS (Secureboot off, Legacy Boot on, USB 3.0 Disabled).
  • The installation of the USB stick ran without significant problems, the SSD was completed wiped.
  • WINOS2 started after installation of the additional package (viop-1.0.wpi from the bugtracker) as desired.
  • Uniaud works with unimix. Check the trick below.
  • ArcaOS USB drivers needed to be replaced with those from Lars Erdmann, as ArcaOS's drivers do not support Isyncronus Data Transfer, wich is needed for Touch screen, Stylus and Webcam.


The Uniaud.sys driver works with the / A: 1 switch Unimix is also required and you need to the add the following on the Startup.cmd:

unimix -id1 -val74 -cnt0
unimix -id1 -val74 -cnt1
unimix -id2 -val1 -cnt0
unimix -id2 -val1 -cnt1

Stylus Support / Digitizer Pen

Stylus is working thanks to Wim Brul's drivers. USBECD and XSMOUSE:

  • Single tap with the Stylus = Left Mouse Button click
  • Pressing the Button on the Stylus = Right Mouse Button click
  • Single tap with the stylus while pressing the Button on the Stylus = Left+Right Mouse Button click

Writing with the Stylus in Jarnal = no problem works like a charm.

Hardware Manager Report