ROS Noetic环境下EAI YDLIDAR X2启动出现RESULT_OPERATION_TIMEOUT超时错误求助

大家好，我之前发过一次求助但没得到回应，所以再发一次。我在树莓派4B的Ubuntu 20.04系统上装好了ROS Noetic，现在想用激光雷达建图，第一步先装了rplidar包。但是当我执行source ~/catkin_ws/devel/setup.bash后，运行roslaunch rplidar_ros rplidar.launch，雷达会转一会儿然后就报错了，错误信息如下：

[ERROR] [1700330979.765364372]: Error, operation time out. RESULT_OPERATION_TIMEOUT!

[rplidarNode-1] process has died [pid 4674, exit code 255, cmd /home/ubuntu/catkin_ws/devel/lib/rplidar_ros/rplidarNode __name:=rplidarNode __log:=/home/ubuntu/.ros/log/8bff9a04-863c-11ee-8151-1d77f81a905d/rplidarNode-1.log].

log file: /home/ubuntu/.ros/log/8bff9a04-863c-11ee-8151-1d77f81a905d/rplidarNode-1*.log

all processes on machine have died, roslaunch will exit

shutting down processing monitor...

... shutting down processing monitor complete

done

对了，报错里提到的那个日志文件实际上并不存在。我用的是EAI YDLIDAR X2，波特率是115200，launch文件里设置的波特率也是这个数值。有没有大佬能帮我解决这个问题呀？

备注：内容来源于stack exchange，提问作者Flamethrower