https://github.com/CalcProgrammer1/TouchpadEmulator/ 修改启动脚本，没有启动TouchpadEmulator，获取合适的方向后启动TouchpadEmulator ，已启动，kill TouchpadEmulator

LaunchTouchpadEmulator.sh

#! /bin/bash

if [ "$1" = "--autostart" ] ; then
    mkdir -p ~/.config/autostart

    AUTOSTART=""
    AUTOSTART+="[Desktop Entry]\r\n"
    AUTOSTART+="Type=Application\r\n"
    AUTOSTART+="Name=Touchpad Emulator Autostart\r\n"
    AUTOSTART+="Exec=sh -c \"LaunchTouchpadEmulator.sh --start-disabled --force-autorotation\"\r\n"
    AUTOSTART+="Icon=TouchpadEmulator\r\n"

    echo -e $AUTOSTART > ~/.config/autostart/TouchpadEmulator-Autostart.desktop

    echo "Autostart enabled, TouchpadEmulator will start automatically on login."
    exit
fi

# If TouchpadEmulator is already running, kill it and exit (we assume user wanted to stop it)
if ps -e | grep "[T]ouchpadEmulato"; then
    echo "TouchpadEmulator is running; killing existing process(es)."
    killall TouchpadEmulator || true
    exit 0
fi

# If access is not already available, load the uinput module and enable user access
# to input devices and uinput.  This requires root permission, so use pkexec to show
# a graphical root prompt.
if ( ! [ -e /dev/uinput ] ) || \
   ( ! [ -w /dev/uinput ] ) || \
   ( ! [ -r /dev/input/event0 ] ) then
    pkexec bash -c "chmod 666 /dev/input/*; modprobe uinput; chmod 777 /dev/uinput"
fi

# Determine rotation from xrandr for primary display
# Mapping: normal -> 0, left -> 90, inverted -> 180, right -> 270
ROTATION_ANGLE="0"
if command -v xrandr >/dev/null 2>&1; then
    line=$(xrandr --query | awk '/ primary / {print; exit}')
    if [ -z "$line" ]; then
        line=$(xrandr --query | awk '/ connected/ {print; exit}')
    fi
    echo "$line"
    if echo "$line" | grep -q " left (normal"; then
        ROTATION_ANGLE=270
    elif echo "$line" | grep -q " inverted (normal"; then
        ROTATION_ANGLE=180
    elif echo "$line" | grep -q " right (normal"; then
        ROTATION_ANGLE=90
    else
        ROTATION_ANGLE=0
    fi
fi

export TOUCHPAD_ROTATION="$ROTATION_ANGLE"

# If user didn't already supply a --rotation-override argument, append it
if ! printf "%s\n" "$@" | grep -q -- "--rotation-override"; then
    TouchpadEmulator --rotation-override "$ROTATION_ANGLE" "$@"
else
    TouchpadEmulator "$@"
fi