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+---
+title: WMR Lighthouse (No SteamVR)
+weight: 9000
+---
+# WMR Lighthouse (No SteamVR)
+
+This describes a WMR Lighthouse setup using the `steamvr_lh` driver.
+
+It's different from [WMR Lighthouse](/docs/steamvr/wmr-lighthouse/)
+
+This doesn't use steamvr to re-map the head from some lighthouse tracking device.
+Instead it does this natively in monado, so SteamVR is only necessary for the proprietary `steamvr_lh` driver.
+
+For now this is a hacky approach requiring a Monado fork, as Monado's builders don't support the functionality yet:
+
+* https://gitlab.freedesktop.org/monado/monado/-/issues/459
+* https://gitlab.freedesktop.org/monado/monado/-/issues/288
+
+This is made for WMR based headsets and has been tested with a Reverb G2 & Vive1 (Vive1 used only for it's 2 watchman dongles needed for the lighthouse controllers).
+
+You can easily adapt this for other headsets in a hacky way, until these issues are closed.
+
+Tested working on Arch Linux with NVIDIA RTX 2060S.
+
+## Setup:
+Setup your lighthouse system on SteamVR Windows. The Linux SteamVR version does not work well. On windows: Update everything, pair everything & setup your room boundaries.
+
+Linux Setup:
+* install Steam
+* Download SteamVR on Steam (try non beta version first)
+* Configurations from Windows copied over
+
+### How To Copy Your Windows Steam Configurations To Linux
+* mount your windows drive (e.g. at `/mnt`)
+* `cp -r "/mnt/Program Files (x86)/Steam/config" ~/.steam/steam/`
+
+### Linux Only Setup
+It may be possible to use SteamVR on Linux to setup your room boundaries, pair and update everything. This is untested, but try at least.
+You may need playspace moving via Wlx to fine tune the floor if you don't have a Windows install.
+
+## Build
+
+### Manually
+Use this fork of Monado
+
+`git clone https://gitlab.freedesktop.org/Zuzka/monado`
+
+(if it's too old for you, try to merge upstream into it and fix it)
+
+Ensure you have all required dependencies installed beforehand (Envision or Monado docs might help)
+
+* `cmake -G Ninja  -B build -DCMAKE_INSTALL_PREFIX=/usr -DXRT_BUILD_DRIVER_SURVIVE=0 -DXRT_BUILD_DRIVER_VIVE=0 -DXRT_BUILD_DRIVER_STEAMVR_LIGHTHOUSE=1`
+* `sudo ninja -C build install`
+
+Set following environment variable in your e.g. bash_profile:
+
+`export LH_DEVICE_SERIAL="{YourSerial}"`
+
+Replace `{YourSerial}` with [your actual serial](#how-to-find-your-serial)
+
+### Envision
+In Envision, set Profile as such:
+
+XR Service Repo:
+```
+https://gitlab.freedesktop.org/Zuzka/monado.git
+```
+
+XR Service CMake Flags:
+```
+XRT_BUILD_DRIVER_SURVIVE=0
+XRT_BUILD_DRIVER_VIVE=0
+XRT_BUILD_DRIVER_STEAMVR_LIGHTHOUSE=1
+```
+Environment Variables:
+```
+LH_DEVICE_SERIAL="{YourSerial}"
+```
+
+Replace `{YourSerial}` with [your actual serial](#how-to-find-your-serial)
+
+Perform a Clean Build after changing the CMake flags!
+
+## How To Find Your Serial
+You can find out the actual tracking device serial by:
+
+1. At monado startup look if you see anything starting with `LHR-` e.g. `LHR-FC2E9BC3`. Try a bunch to find the tracker attached to your headset.
+2. running this command and trying a bunch: `ls ~/.steam/steam/config/lighthouse/ | tr '[:lower:]' '[:upper:]'`
+3. Running `motoc show` in a terminal
+
+## Notes
+* Turn on all your trackers & controllers and ensure the light is green, before starting monado.
+* If you decide to use another lighthouse tracker mount, you'd need to figure the new tracker offset math in the Monado source code.
+* If you use a Vive 1 as controller connection dongles *only connect power and USB*.
+* Fork works fine without a Vive 1 for dongles, usb dongles work aswell.
+
+## Useful Resources:
+* https://monado.freedesktop.org/getting-started.html#installation-from-source
+* https://monado.freedesktop.org/valve-index-setup.html
+* check the commits on the fork for more info https://gitlab.freedesktop.org/Zuzka/monado
+* vive tracker 3.0 3d printable mount
+  * model: https://www.printables.com/model/107654-hp-reverb-g2-vive-tracker-mount