Bug Oculus Quest 2 and Quest Link failing to start

Hi all,

I'm having real difficulty migrating to the new XR system in 2021.
I'm only using the Quest 2 on Quest Link and only need the headset to work when the user enables it via UI. I only need the headset to work, so don't need any controllers etc.

I have the XR Plugin and Oculus plugin installed with the latest versions.
Oculus is selected in Plug-in Providers under XR Plug-In Management

I have the Oculus software running and Quest Link selected.
Initialize XR on Startup is off.

This is the code I have attached to the UI button.

Code (CSharp):

1. IEnumerator StartXR()
2. {
3.     Debug.Log("Initializing XR...");
4.     yield return XRGeneralSettings.Instance.Manager.InitializeLoader();
5.  
6.     if (XRGeneralSettings.Instance.Manager.activeLoader == null)
7.     {
8.         Debug.LogError("Initializing XR Failed. Check Editor or Player log for details.");
9.     }
10.     else
11.     {
12.         Debug.Log("Starting XR...");
13.         XRGeneralSettings.Instance.Manager.activeLoader.Start();
14.     }
15. }
16.  
17. void StopXR()
18. {
19.     Debug.Log("Stopping XR...");
20.  
21.     if (XRGeneralSettings.Instance.Manager.activeLoader != null)
22.     {
23.         XRGeneralSettings.Instance.Manager.activeLoader.Stop();
24.         Debug.Log("XR stopped completely.");
25.     }
26.  
27.     Camera.main.ResetAspect();
28. }

This works the first time I run it in the editor but after I always get this error message:

Failed to set DeveloperMode on Start.

It's as though something isn't being reset after exiting play mode.

Someone else asked on the forums but was never resolved:
https://forum.unity.com/threads/stop-and-restart-xr-plugin-management.1145918/#post-7356980

I'm only building for Windows.

Unity: 2021.2.4f1
XR Plugin: 4.2.1
Oculus XR Plugin: 1.11.2
OpenXR Plugin: 1.2.8

Has anyone else come across this issue and manage to fix it?

 

Yes, I had this problem. Turned out I forgot to run "StopXR" at the end of a session (ended up working when I put it in "OnDestroy").

My script is a little bit different:

Code (CSharp):

1. using System.Collections;
2. using UnityEngine;
3. using UnityEngine.XR.Management;
4.  
5. public class VRInitializer : MonoBehaviour
6. {
7.     private void Start()
8.     {
9. EnableXR();
10.     }
11.     private void OnDestroy()
12.     {
13.         DisableXR();
14.     }
15.     public void EnableXR()
16.     {
17.         StartCoroutine(StartXRCoroutine());
18.     }
19.     public void DisableXR()
20.     {
21.         Debug.Log("Stopping XR...");
22.         XRGeneralSettings.Instance.Manager.StopSubsystems();
23.         XRGeneralSettings.Instance.Manager.DeinitializeLoader();
24.         Debug.Log("XR stopped completely.");
25.     }
26.  
27.     public IEnumerator StartXRCoroutine()
28.     {
29.         Debug.Log("Initializing XR...");
30.         yield return XRGeneralSettings.Instance.Manager.InitializeLoader();
31.  
32.         if (XRGeneralSettings.Instance.Manager.activeLoader == null)
33.         {
34.             Debug.LogError("Initializing XR Failed. Check Editor or Player log for details.");
35.         }
36.         else
37.         {
38.             Debug.Log("Starting XR...");
39.             XRGeneralSettings.Instance.Manager.StartSubsystems();
40.         }
41.     }
42. }

 

Brilliant, thanks for that, this issue was driving me mad. Do you think this is a Unity problem, an Oculus problem or a problem with OpenXR? Thanks again mate.