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docs: add guidance for setting GPU for encoding in ALVR #2499

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docs: add guidance for setting GPU for encoding in ALVR #2499

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8 changes: 8 additions & 0 deletions wiki/Linux-Troubleshooting.md
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Expand Up @@ -65,6 +65,14 @@ Put `DRI_PRIME=1 %command%` into SteamVR's commandline options and in those of a

Put `__NV_PRIME_RENDER_OFFLOAD=1 __VK_LAYER_NV_optimus=NVIDIA_only __GLX_VENDOR_LIBRARY_NAME=nvidia %command%` into SteamVR's commandline options and in those of all VR games you intend to play with ALVR.

### ALVR is using the wrong GPU (e.g., iGPU) for encoding

Put `VK_DRIVER_FILES=<path to the required GPU driver's ICD>` to the SteamVR launch options. For example, for Nvidia:

On:
* Arch Linux: `VK_DRIVER_FILES=/usr/share/vulkan/icd.d/nvidia_icd.json`
* NixOS: `VK_DRIVER_FILES=/usr/share/vulkan/icd.d/nvidia_icd.x86_64.json`

## Wayland

When using hyprland or Gnome Wayland you need to put `WAYLAND_DISPLAY='' %command%` into the SteamVR commandline options to force XWayland.
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