wacom led toggle buttons assigned to opposite touch strips

[ryan]

In Ubuntu 18.04.1, the button mappings for the Wacom Cintiq21ux2 touch strips are reversed.

The Cintiq has 2 touch strips, 1 on each side of the Cintiq. Correlating with these touchstrips are toggle buttons, 1 for each. Every time the toggle button is pressed, one of 4 leds will light up, indicating a mode switch. The mode switch will change the button mappings of the touchstrip.

What Ubuntu is doing, is mapping the wrong toggle button to the touchstrips. Instead of changing the mode to the touchstrip that is nearest to the button, it changes the touchstrip on opposite side of the Cintiq, making it useless.

The file cintiq-21ux2.tablet in libwacom shows the diagram of the button mappings. A and J are reversed in Ubuntu 18.04.1. Button 'A' should correlate to 'a-A' touchstrip groupings, and J should correlate to 'b-B' groupings.

This is an Ubuntu specific Bug, one that is not seen in OpenSUSE using Gnome, or Archlinux using Gnome.

The gnome-control-center version I have is 1:3.28.2-0ubuntu0.18.04.1

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-control-center 1:3.28.2-0ubuntu0.18.04.1
ProcVersionSignature: Ubuntu 4.15.0-32.35-generic 4.15.18
Uname: Linux 4.15.0-32-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Aug 15 05:21:26 2018
InstallationDate: Installed on 2018-08-15 (0 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)