No ROS2 Publish Clock Node

[tabergeron]

Isaac Sim Version

4.5.0

Operating System

Ubuntu 22.04

The Isaac Sim 4.5.0 ROS2 Clock tutorials mention a ROS2 Publish Clock node, but that node is not available/listed in Isaac Sim 4.5.0 ActionGraph.Nodes list.

Is this a known bug or is there a way to import additional library OmniGraph nodes?

[VickNV]

“ROS2 Publish Clock” is available in Window->Graph Editors->Action Graph on my system. Did you enable the ROS Bridge Extension as described in ROS and ROS 2 Installation — Isaac Sim Documentation?

[tabergeron]

Yes, the ROS Bridge Extension is enabled, and I can see other ROS nodes. I completely uninstalled 4.0.0 according to the published documentation and then installed 4.5.0, and the Isaac Sim window shows 4.5.0.

• rm -rf /home/<user>/.local/share/ov/pkg/isaac-sim-4.0.0/
• Install Isaac Sim 4.5.0 https://docs.isaacsim.omniverse.nvidia.com/latest/installation/install_workstation.html
• ${ISAACSIM_PATH}/isaac-sim.sh --reset-user
  For good measure, I had also uninstalled and reinstalled ROS

[VickNV]

Could you provide a full log?

[tabergeron]

What would you like logs of? I upgraded to 4.5.0 months ago. I can provide the isaac sim startup logs

[VickNV]

That will be good.

[tabergeron]

isaac-sim.sh_logs.txt (47.2 KB)
Thank you for looking into this, please let me know if there are any additional logs you’d like to see.

[VickNV]

I didn’t find this message in your log file:

2025-04-23 05:37:39 [11,949ms] [Info] [omni.ext.plugin] [ext: isaacsim.ros2.bridge-4.1.15] started, startup time: 198 (ms) 

You may need to carefully follow the instructures in ROS and ROS 2 Installation — Isaac Sim Documentation to ensure everything is set up properly.