libwacom touch strip mappings are reversed for cintiq 21ux

[ryan]

In the location libwacom/ the file 'cintiq-21ux2.tablet' has the wrong button mapping for the touch strips. This error causes the LED lights/touch strip modes to correspond to the buttons on the opposite sides of the cintiq, rather than their correct groupings.

The Cintiq has 4 LED lights that represent 4 different modes that a center button toggles between. There is one center button and 4 LEDs on each side of the Cintiq that correspond to a touch-strip. The expected action is that by pressing the center button, it would change the button mappings of the touch-strip located directly behind the center button. The Leds would reflect this change by lighting up a different led. Continued presses would toggle between the 4 LEDs/modes.

What is happening is the button toggle is not changing the mappings of the touch-strip directly behind it, instead it's changing the button mappings for touch-strip on the other side of the Cintiq.

At the end of the file, you will see : 'Touchstrip=A' and 'Touchstrip2=J' These should be corrected as 'Touchstrip=J' and 'Touchstrip2=A'. After correcting my file, the button mapping in Wacom Tablet works correctly.

I believe this issue is a kernal one, but the problem can be solved by simply changing the file that libwacom has.

[Timo Aaltonen (tjaalton)]

you should file this upstream

https://github.com/linuxwacom/libwacom/issues