vrp_vh Posted January 18 Share Posted January 18 Issue: Applications sometimes crash during openxr initialization/startup when XR_APILAYER_VIVE_facial_tracking (ViveOpenXRFacialTracking.dll) is loaded. versions: VBS - 1.10.4 ViveOpenXRFacialTracking.dll - 0.1.6.0 Unity - 2021.3 OpenXR plugin - 1.6.0 Repro: Cannot be reproduced consistently. Happens mostly when VBS is running without steamvr and openxr is initialized manually inside unity script. Sample app: Unity application with unity OpenXR plugin v1.6.0 https://docs.unity3d.com/Packages/com.unity.xr.openxr@1.6/manual/index.html One of the OpenXR plugin samples (InterceptFeature) can be used. + simple script (attatched in files) that would start and stop openxr loader on key press. To achieve said crash: 1/ start VBS (without steamvr) 2/ start unity app 3/ press M (StartXR) 4/ if application did not crash kill vrserver.exe and goto step 3 Workaround A: Disable facial tracking layer in system registry. HKEY_LOCAL_MACHINE\SOFTWARE\Khronos\OpenXR\1\ApiLayers\Implicit - set facial tracking dword to something != 0 Workaround B: Disable facial tracking layer using DISABLE_XR_APILAYER_VIVE_FACIAL_TRACKING_1 environment variable XRSwitch.cs Editor.log htc_openxr_facial_tracking_20230118.txt crash.dmp htc_facial_tracking_crash.evtx Link to comment Share on other sites More sharing options...
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