XR Core events won't fire after headset goes to sleep and wakes up again

Omniverse Isaac Sim
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1

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Isaac Sim Version

5.1.0

Operating System

Ubuntu 24.04

Headset

Meta Quest 3

GPU Information

  • Model: RTX 3090
  • Driver Version: 580

Topic Description

Detailed Description

I have successfully set up an event for my right hand controller’s trigger button.

self._xrcore = xr_core.XRCore.get_singleton()
self._right_hand = self._xrcore.get_input_device("/user/hand/right")
self._event_generator = self._right_hand.bind_event_generator("trigger", "right_trigger", ["press", "release", "update", "state"])

message_bus: carb.events.IEventStream = self._xrcore.get_message_bus()
message_type_trigger: int = carb.events.type_from_string("right_trigger.state")
self._sub = message_bus.create_subscription_to_pop_by_type(message_type_trigger, self._on_xr_input_event)

The _on_xr_input_event function prints trigger value as expected, but once I put my headset down for 15 seconds, it goes to sleep mode, and when I put it back on, everything else works, I can teleport around, pick up objects etc, but the event won’t fire.

Error Messages

I also get this weird error message when setting up the event generator:

2025-12-08T23:39:44Z [31,319ms] [Error] [omni.kit.xr.core.python] bind_event_generator right_trigger
2025-12-08T23:39:44Z [31,319ms] [Error] [omni.kit.xr.core.python] bind_event_generator token: press
2025-12-08T23:39:44Z [31,319ms] [Error] [omni.kit.xr.core.python] bind_event_generator token: release
2025-12-08T23:39:44Z [31,319ms] [Error] [omni.kit.xr.core.python] bind_event_generator token: update
2025-12-08T23:39:44Z [31,319ms] [Error] [omni.kit.xr.core.python] bind_event_generator token: state
2

Thanks for the detailed report. Since this is a duplicate of the existing GitHub discussion, let’s continue the conversation there so we can track it in one place: XR Core events won't fire after headset goes to sleep and wakes up again · isaac-sim/IsaacSim · Discussion #350 · GitHub. We’ll close this forum topic and follow up in that GitHub thread.