Hey @VIVE_chengnay
For Null HMD set up I adjusted 2 scripts:
1. Steam>steamapps>common>SteamVR>resources>settings>default.vrsettings
"steamvr": {
"requireHmd": false,
"forcedDriver": "null",
"activateMultipleDrivers": true,
2. Steam>steamapps>common>SteamVR>drivers>null>resources>settings>defaul.vrsettings
"driver_null": {
"enable": true,
I also removed:
"driver_null": {
"windowX": 0,
"windowY": 0,
"windowWidth": 2160,
"windowHeight": 1200,
The controllers appear to be oriented properly while using SteamVR with the headset.
Software versions:
Steam - 1696019606
SteamVR - App ID 250820, Build ID 12437937, using beta - SteamVR Beta Update
Unity Editor 2022.3.4f1
Using OpenXR 1.8.2 plugin in Unity