Hello,
I tried to run this navigation demo on a Stretch RE3 robot but I met this error
The ros process then directly exited.
The command I ran was
ros2 launch stretch_nav2 offline_mapping.launch.py teleop_type:=keyboard
Do you have any idea what might go wrong?
Hi @Peiqi_Liu, I was able to reproduce the errors you’re seeing by running that command while SSH-ed into the robot. In particular, I SSH-ed into Stretch without X-forwarding enabled, and then ran ros2 launch .... Then, when Rviz tries to start, and fails because X (X is the window manager for Linux) is inactive, the rest of the nodes are automatically exited. Are you SSH-ing into Stretch when you tried that command? If so, you can include use_rviz:=false, so Rviz doesn’t attempt to launch on the robot and instead launch Rviz on your PC.
Also, note that teleop_type:=keyboard isn’t implemented yet.
Hello Binit,
here is the new output after setting use_rviz to false:
ros2 launch stretch_nav2 offline_mapping.launch.py) is running properly?
Hi @Peiqi_Liu, yes, that’s correct. You can visualize the map as it’s being built by opening Rviz on your PC.