N-trig DuoSense touchscreen on X11 is initialized as a scrolling device with maxPoints = 1

        case XCB_INPUT_DEVICE_CLASS_TYPE_BUTTON: {
            auto *bci = reinterpret_cast<xcb_input_button_class_t *>(classinfo);
            xcb_atom_t *labels = nullptr;
            if (bci->num_buttons >= 5) {
                labels = xcb_input_button_class_labels(bci);
                xcb_atom_t label4 = labels[3];
                xcb_atom_t label5 = labels[4];
                // Some drivers have no labels on the wheel buttons, some have no label on just one and some have no label on
                // button 4 and the wrong one on button 5. So we just check that they are not labelled with unrelated buttons.
                if ((!label4 || qatom(label4) == QXcbAtom::ButtonWheelUp || qatom(label4) == QXcbAtom::ButtonWheelDown) &&
                    (!label5 || qatom(label5) == QXcbAtom::ButtonWheelUp || qatom(label5) == QXcbAtom::ButtonWheelDown))
                    scrollingDevice()->legacyOrientations |= Qt::Vertical;
            }

[     0.004 D] qt.qpa.input.devices QWindowSystemInterface::registerInputDevice - register QPointingDevice("N-trig DuoSense Stylus" Stylus id=9 seat=30002 ptrType=Pen caps=Position|Pressure|MouseEmulation|Hover uniqueId=0)
[     0.004 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    it's a scrolling device
[     0.004 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice - input device  "N-trig DuoSense" ID 10
[     0.004 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has 7 buttons  <------ but it's really a touchscreen
[     0.004 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has valuator "Abs MT Position X" recognized? true
[     0.005 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has valuator "Abs MT Position Y" recognized? true
[     0.005 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has valuator "Rel Horiz Scroll" recognized? true
[     0.005 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has valuator "Rel Vert Scroll" recognized? true
[     0.005 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    it's a scrolling device
[     0.005 D] qt.qpa.input.devices QXcbConnection::populateTouchDevices -    has touch class with mode 1
[     0.005 D] qt.qpa.input.devices QXcbConnection::populateTouchDevices - unexpectedly missing RelVert/HorizWheel atoms for touchpad with scroll capability QPointingDevice("N-trig DuoSense" TouchScreen id=a seat=30002 ptrType=Finger caps=Position|NormalizedPosition|Scroll maxPts=10)
[     0.006 D] qt.qpa.input.devices QWindowSystemInterface::registerInputDevice - register QPointingDevice("N-trig DuoSense" TouchScreen id=a seat=30002 ptrType=Finger caps=Position|NormalizedPosition|Scroll maxPts=10)
[     0.006 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    it's a touchscreen with type 2 capabilities 0x121 max touch points 10
[     0.006 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice - input device  "N-trig DuoSense Mouse" ID 11
[     0.006 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has 7 buttons
[     0.006 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has valuator "Rel X" recognized? true
[     0.006 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has valuator "Rel Y" recognized? true
[     0.007 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has valuator "Rel Horiz Scroll" recognized? true
[     0.007 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has valuator "Rel Vert Scroll" recognized? true
[     0.007 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    it's a scrolling device
[     0.007 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    it's a mouse
[     0.007 D] qt.qpa.input.devices QWindowSystemInterface::registerInputDevice - register QPointingDevice("N-trig DuoSense Mouse" Mouse id=b seat=30002 caps=Position|Scroll|Hover)
[     0.007 D] qt.qpa.input.devices QWindowSystemInterface::registerInputDevice - register QInputDevice("Input Club Infinity_Ergodox/QMK", type=QInputDevice::DeviceType::Keyboard, ID=c, seat='30002')
[     0.008 D] qt.qpa.input.devices QWindowSystemInterface::registerInputDevice - register QInputDevice("Input Club Infinity_Ergodox/QMK System Control", type=QInputDevice::DeviceType::Keyboard, ID=d, seat='30002')
[     0.008 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice - input device  "Input Club Infinity_Ergodox/QMK Consumer Control" ID 14
[     0.008 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has 7 buttons
[     0.008 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    it's a keyboard
[     0.008 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has valuator "Rel X" recognized? true
[     0.008 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has valuator "Rel Y" recognized? true
[     0.008 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has valuator "Rel Horiz Wheel" recognized? true
[     0.009 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    has valuator "" recognized? false
[     0.009 D] qt.qpa.input.devices QXcbConnection::xi2SetupSlavePointerDevice -    it's a scrolling device