[Bug Report] Verifying the Isaac Sim installation

[mjkim001130]

When I installing the Isaacsim via pip intallation, refer this link:

https://isaac-sim.github.io/IsaacLab/main/source/setup/installation/pip_installation.html

However, I verifying the isaacsim installation command

isaacsim

2026-06-10T02:23:39Z [7,046ms] [Error] [isaacsim.ros2.bridge.impl.extension] ROS2 Bridge startup failed

This issue rise.

How can i fix it?

[RandomOakForest]

Thank you for posting this. It seems you are hitting an installation setup hurdle. Could you please share a longer error log? Do you see a line that says the following?

To use the internal libraries included with the extension please set the following environment variables...

If so, have you followed the suggestions afterwards in your error log?
Also, please let us know which Isaac Lab and Isaac Sim version are you installing, and your platform specs. Thanks.

[mjkim001130]

Thank you for response.
OS: Ubuntu 24.04.4 LTS
GPU: NVIDIA GeForce RTX 5090

I installed Isaac Sim version 5.1.0 and main version Isaac Lab.

I did not see this line in the log:

To use the internal libraries included with the extension please set the following environment variables...`

The relevant longer log around the ROS2 bridge startup is:

[6.046s] [ext: omni.kit.widget.live-2.1.11] startup
[6.048s] [ext: omni.kit.widget.calendar-1.0.9] startup
[6.049s] [ext: omni.services.transport.client.base-1.2.4] startup
[6.050s] [ext: omni.kit.viewport_widgets_manager-1.0.9] startup
[6.051s] [ext: omni.usdex.libs-1.2.2] startup
[6.057s] [ext: omni.scene.optimizer.core-107.3.12] startup
[6.081s] [ext: omni.kit.widget.cache_indicator-3.0.7] startup
2026-06-10T02:35:23Z [6,063ms] [Warning] [omni.kit.pipapi.pipapi] extension omni.kit.widget.cache_indicator-3.0.7 has a [python.pipapi] entry, but use_online_index=true is not set. It doesn't do anything and can be removed.
2026-06-10T02:35:23Z [6,098ms] [Warning] [omni.kit.widget.cache_indicator.cache_state_menu] Unable to detect Omniverse Cache Server. File /home/joy4mj/.nvidia-omniverse/config/omniverse.toml is not found. Consider installing it for better IO performance.
[6.116s] [ext: omni.kit.widget.extended_searchfield-1.0.31] startup
[6.122s] [ext: omni.services.client-0.5.3] startup
[6.123s] [ext: omni.kit.widget.schema_api-1.0.3] startup
[6.124s] [ext: omni.isaac.physics_inspector-0.1.11] startup
2026-06-10T02:35:23Z [6,107ms] [Warning] [omni.isaac.physics_inspector] omni.isaac.physics_inspector has been deprecated.Replaced by Physics Visualization tools
[6.125s] [ext: omni.kit.converter.common-507.1.2] startup
[6.126s] [ext: omni.services.transport.server.base-1.1.1] startup
[6.127s] [ext: omni.physx.demos-107.3.26] startup
[6.138s] [ext: omni.asset_validator.core-1.1.6] startup
[6.164s] [ext: omni.kit.property.physx-107.3.26] startup
[6.179s] [ext: omni.services.facilities.monitoring.progress-0.2.4] startup
[6.182s] [ext: isaacsim.util.merge_mesh-2.0.15] startup
[6.183s] [ext: omni.services.transport.server.http-1.3.1] startup
[6.195s] [ext: omni.services.transport.client.http_async-1.4.0] startup
[6.196s] [ext: omni.kit.widget.timeline-107.0.1] startup
[6.198s] [ext: omni.physx.vehicle-107.3.26] startup
[6.210s] [ext: omni.kit.window.script_editor-2.0.1] startup
[6.212s] [ext: omni.asset_validator.ui-1.1.6] startup
[6.220s] [ext: omni.physx.asset_validator-107.3.26] startup
[6.228s] [ext: omni.services.convert.cad-507.0.2] startup
[6.232s] [ext: isaacsim.sensors.physx.ui-2.3.0] startup
[6.233s] [ext: omni.physx.camera-107.3.26] startup
[6.238s] [ext: omni.physx.cct-107.3.26] startup
[6.245s] [ext: omni.physx.graph-107.3.26] startup
[6.259s] [ext: omni.physx.supportui-107.3.26] startup
[6.272s] [ext: omni.physx.telemetry-107.3.26] startup
[6.273s] [ext: omni.kit.converter.dgn_core-510.1.0] startup
[6.321s] [ext: omni.isaac.range_sensor.ui-2.0.5] startup
2026-06-10T02:35:23Z [6,305ms] [Warning] [omni.isaac.range_sensor.ui] omni.isaac.range_sensor.ui has been deprecated in favor of isaacsim.sensors.physx.ui. Please update your code accordingly.
[6.323s] [ext: omni.kit.converter.hoops_core-509.1.0] startup
[6.328s] [ext: omni.kit.window.usd_paths-1.0.8] startup
[6.332s] [ext: omni.kit.converter.jt_core-508.1.0] startup
[6.344s] [ext: omni.services.facilities.monitoring.metrics-0.3.0] startup
[6.349s] [ext: omni.physx.bundle-107.3.26] startup
[6.349s] [ext: omni.kit.converter.dgn-509.1.0] startup
[6.351s] [ext: isaacsim.sensors.physx.examples-2.2.15] startup
[6.353s] [ext: omni.kit.converter.hoops-509.1.0] startup
[6.359s] [ext: isaacsim.replicator.grasping-1.0.9] startup
[6.560s] [ext: omni.kit.converter.jt-508.1.0] startup
[6.561s] [ext: omni.services.convert.asset-508.0.2] startup
[6.566s] [ext: omni.kit.quicklayout-1.0.8] startup
[6.568s] [ext: omni.kit.window.commands-0.2.9] startup
[6.569s] [ext: omni.isaac.range_sensor.examples-2.0.6] startup
2026-06-10T02:35:24Z [6,552ms] [Warning] [omni.isaac.range_sensor.examples] omni.isaac.range_sensor.examples has been deprecated in favor of isaacsim.sensors.physx.examples. Please update your code accordingly.
[6.570s] [ext: isaacsim.util.camera_inspector-1.0.16] startup
[6.574s] [ext: isaacsim.replicator.grasping.ui-1.0.8] startup
[6.576s] [ext: isaacsim.asset.validation-1.1.0] startup
[6.595s] [ext: omni.kit.converter.cad-205.0.0] startup
[6.596s] [ext: omni.kit.window.stats-0.1.7] startup
[6.597s] [ext: isaacsim.app.setup-1.6.0] startup
[6.597s] Isaac Sim Full Version: 5.1.0-rc.19
[6.598s] Writing Isaac Sim icon file
[6.598s] [ext: omni.kit.profiler.window-2.3.5] startup
[6.602s] [ext: isaacsim.exp.full-5.1.0] startup
[6.925s] [ext: isaacsim.ros2.bridge-4.12.4] startup
[6.963s] Attempting to load system rclpy
[6.963s] Could not import system rclpy: No module named 'rclpy'
[6.963s] Attempting to load internal rclpy for ROS Distro: jazzy
[6.976s] rclpy loaded
2026-06-10T02:35:24Z [7,129ms] [Warning] [omni.fabric.plugin] Warning: attribute viewportHandle not found for bucket id b

Segmentation fault (core dumped)

[timswim]

I had the same issue and the line

To use the internal libraries included with the extension please set the following environment variables...

and i followed the suggestions

export ROS_DISTRO=jazzy
export RMW_IMPLEMENTATION=rmw_fastrtps_cpp
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/tim/Projects/envs/isaaclab/lib/python3.11/site-packages/isaacsim/exts/isaacsim.ros2.bridge/jazzy/lib`.

But i still have in the end

[9.480s] [ext: isaacsim.ros2.bridge-4.12.4] startup
[9.524s] Attempting to load system rclpy
[9.524s] Could not import system rclpy: No module named 'rclpy'
[9.524s] Attempting to load internal rclpy for ROS Distro: jazzy
[9.539s] rclpy loaded
2026-06-12T20:45:43Z [9,692ms] [Warning] [omni.fabric.plugin] Warning: attribute viewportHandle not found for bucket id b

[9.833s] app ready
Segmentation fault (core dumped)

I use Isaac Sim = 5.1.0
Thank you in advance!

[timswim]

I found this problem in the link https://forums.developer.nvidia.com/t/cannot-start-isaacsim-5-1-0-because-ros2-bridge/369700 and dowgrade driver to 580 works for me. I had 595 for RTX5070Ti.

[PeterL-NV]

Thanks @timswim for the update!

@mjkim001130 what's the driver you're using? Can you try 580 to see if that fixes your problem?