[解决方法]realsence D455 在jetson nano 无法正常读取imu数据（/camera/imu、/camera/accel/sample）

hardware：jetsonnano

myenv：官方提供的ubuntu18镜像

问题描述：d455 其余数据均能够正常显示，但是不论用realsence_viewer还是通过ros启动launch文件，均无法正常显示imu话题数据，和/camera/imu  、 /camera/accel/sample 都没有数据输出。

最终找到解决方案，亲测有效：感谢Unable to read IMU data on the D435i · Issue #10304 · IntelRealSense/librealsense · GitHubhttps://github.com/IntelRealSense/librealsense/issues/10304#issuecomment-1067255231

# Uninstall all realsense packages
sudo apt remove librealsense2 ros-melodic-realsense2-camera librealsense2-udev-rules ros-melodic-librealsense2 librealsense2-dev# Reinstall librealsense2 at version 2.48.0 and place those packages on hold (to prevent
# automatic upgrades)
sudo apt install \librealsense2=2.48.0-5ubuntu5~1.gbp156c1b \librealsense2-udev-rules=2.48.0-5ubuntu5~1.gbp156c1b \librealsense2-utils=2.48.0-5ubuntu5~1.gbp156c1b \librealsense2-gl=2.48.0-5ubuntu5~1.gbp156c1b \librealsense2-net=2.48.0-5ubuntu5~1.gbp156c1b \librealsense2-dev=2.48.0-5ubuntu5~1.gbp156c1b
sudo apt-mark hold \librealsense2 \librealsense2-udev-rules \librealsense2-utils \librealsense2-gl \librealsense2-net \librealsense2-dev# To remove the hold on the package versions, just run `sudo apt-mark unhold <package name>`

viewer测试结果显示正常！！ 

 对于ros话题，删除原先2.5的版本

mkdir -p ~/catkin_ws/src
cd ~/catkin_ws/src/
git clone https://github.com/IntelRealSense/realsense-ros.git
cd realsense-ros/
git checkout 2.3.1
cd ..
catkin_init_workspace
cd ..
catkin_make -DCATKIN_ENABLE_TESTING=False -DCMAKE_BUILD_TYPE=Release
catkin_make install
echo "source ~/catkin_ws/devel/setup.bash" >> ~/.bashrc
source ~/.bashrc

也是亲测有效！可以正常显示imu话题数据