Настройка прокрутки для трэкпоинта

Вот список устройств ввода.

⎡ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ DualPoint Stick                           id=12   [slave  pointer  (2)]
⎜   ↳ AlpsPS/2 ALPS DualPoint TouchPad          id=13   [slave  pointer  (2)]
⎣ Virtual core keyboard                         id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ Power Button                              id=6    [slave  keyboard (3)]
    ↳ Video Bus                                 id=7    [slave  keyboard (3)]
    ↳ Power Button                              id=8    [slave  keyboard (3)]
    ↳ Sleep Button                              id=9    [slave  keyboard (3)]
    ↳ Laptop_Integrated_Webcam_2M               id=10   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=11   [slave  keyboard (3)]

Соответственно, DualPoint Stick - трекпоинт. Ему нужно включить эмуляцию прокрутки.

Вот насройки xorg.
/etc/X11/xorg.conf.d/20-synaptics.conf

Section "InputClass"
        Identifier "synaptics-all"
        Driver "synaptics"
        MatchProduct "AlpsPS/2 ALPS DualPoint TouchPad"
        MatchIsTouchpad "on"
                Option "TapButton1" "1"
                Option "TapButton2" "2"
                Option "TapButton3" "3"
                Option "VertEdgeScroll" "on"
                Option "HorizEdgeScroll" "on"
EndSection

Section "InputClass"
    Identifier  "Trackpoint Wheel Emulation"
    MatchProduct        "DualPoint Stick"
    MatchDevicePath     "/dev/input/event*"
    Option              "EmulateWheel"          "true"
    Option              "EmulateWheelButton"    "2"
    Option              "Emulate3Buttons"       "false"
    Option              "XAxisMapping"          "6 7"
    Option              "YAxisMapping"          "4 5"
EndSection

Теперь при средней кнопке + трэкпоинт происходит прокрутка.

При подготовке использовались материалы с арчевики