Same problem here (and same hardware).
I rotate the screen with unity, but the pen is not rotated.
I rotate the pen with xsetwacom --set "Serial Wacom Tablet eraser" rotate cw
and "reset" with xsetwacom --set "Serial Wacom Tablet eraser" rotate 0
Same problem here (and same hardware).
I rotate the screen with unity, but the pen is not rotated.
I rotate the pen with
xsetwacom --set "Serial Wacom Tablet eraser" rotate cw
and "reset" with
xsetwacom --set "Serial Wacom Tablet eraser" rotate 0