"SteamVR Not Initialized (109)" in DeoVR when enabled

[itsame-luigi]

When I have this API Layer enabled, DeoVR fails to initialize SteamVR, so the headset and controllers aren't recognized. In addition, the SteamVR dashboard icon for openxr-steamvr-passthrough isn't shown.

DeoVR logs the following:

<b>[SteamVR]</b> Not Initialized (109)
<b>[SteamVR]</b> Initialization failed. Please verify that you have SteamVR installed, your hmd is functioning, and OpenVR Loader is checked in the XR Plugin Management section of Project Settings.

openxr-steamvr-passthrough logs the following to XR_APILAYER_NOVENDOR_steamvr_passthrough.log:

2024-08-28 08:38:19 -0400: XR_APILAYER_NOVENDOR_steamvr_passthrough layer (0.2.6) is active
2024-08-28 08:38:19 -0400: Using layer: XR_APILAYER_NOVENDOR_steamvr_passthrough
2024-08-28 08:38:19 -0400: Requested extension: XR_KHR_vulkan_enable
2024-08-28 08:38:19 -0400: Requested extension: XR_KHR_D3D11_enable
2024-08-28 08:38:19 -0400: Requested extension: XR_KHR_D3D12_enable
2024-08-28 08:38:19 -0400: Requesting extension: XR_KHR_win32_convert_performance_counter_time
2024-08-28 08:38:19 -0400: Application Oculus VR Plugin (Unity 2022.3.15f1 (b58023a2b463)) creating OpenXR instance...
2024-08-28 08:38:19 -0400: OpenXR instance successfully created
2024-08-28 08:38:21 -0400: XR_APILAYER_NOVENDOR_steamvr_passthrough layer (0.2.6) is active
2024-08-28 08:38:21 -0400: Using layer: XR_APILAYER_NOVENDOR_steamvr_passthrough
2024-08-28 08:38:21 -0400: Requested extension: XR_KHR_vulkan_enable
2024-08-28 08:38:21 -0400: Requested extension: XR_KHR_D3D11_enable
2024-08-28 08:38:21 -0400: Requested extension: XR_KHR_D3D12_enable
2024-08-28 08:38:21 -0400: Requesting extension: XR_KHR_win32_convert_performance_counter_time
2024-08-28 08:38:21 -0400: Application Oculus VR Plugin (Unity 2022.3.15f1 (b58023a2b463)) creating OpenXR instance...
2024-08-28 08:38:21 -0400: OpenXR instance successfully created

("Oculus VR Plugin (Unity 2022.3.15f1 (b58023a2b463))" is what appears in SteamVR when DeoVR is launched)

• SteamVR: latest beta (build ID 15442208)
• DeoVR: latest (14.0)
• Headset: HTC Vive (original)
  • Camera: enabled at 60Hz, works as expected when RoomView is enabled in SteamVR dashboard