How to get WSLg working with OpenGL, Vulkan, and CUDA on (Official) Arch Linux and Ubuntu WSL Instances.

WSLg with OpenGL, Vulkan, and CUDA on (Official) Arch Linux and Ubuntu WSL Instances

Note: I haven't documented CUDA here. I'm lazy (and haven't tested on Arch). See https://documentation.ubuntu.com/wsl/en/latest/howto/gpu-cuda for that on Ubuntu.

Context

microsoft/wslg#1312:

So I got this working on both Ubuntu, and Arch. First, start with a fresh install (of archlinux from https://gitlab.archlinux.org/archlinux/archlinux-wsl or Ubuntu from wsl --install Ubuntu or https://apps.microsoft.com/detail/9pdxgncfsczv).

Arch

Install mesa and vulkan-dzn.
Run echo "L+ /tmp/.X11-unix - - - - /mnt/wslg/.X11-unix" | sudo tee /etc/tmpfiles.d/wslg.conf. (Thanks to microsoft/wslg#43 (comment) for this.)
Create your user account as per https://wiki.archlinux.org/title/Users_and_groups#User_management and confgure it as the default user for WSL as per https://wiki.archlinux.org/title/Install_Arch_Linux_on_WSL#Set_default_user.
su into the user or open a new terminal tab/window.
Run:

cat << EOF
export GALLIUM_DRIVER=d3d12

for i in "/mnt/wslg/runtime-dir/"*; do
  [ "$XDG_RUNTIME_DIR" = "$HOME" ] && XDG_RUNTIME_DIR="/var/run/user/$UID"
  if [ ! -L "$XDG_RUNTIME_DIR$(basename "$i")" ]; then
    [ -d "$XDG_RUNTIME_DIR$(basename "$i")" ] && rm -r "$XDG_RUNTIME_DIR$(basename "$i")"
    ln -s "$i" "$XDG_RUNTIME_DIR$(basename "$i")"
  fi
done
EOF | sudo tee /etc/profile.d/wslg.sh`

Restart WSL with wsl --shutdown from CMD/PowerShell and you should see the following (given you install the relevant packages):

$ glxinfo | grep Device
    Device: D3D12 (NVIDIA GeForce RTX 4080 SUPER) (0xffffffff)

$ vulkaninfo | grep "GPU id"
WARNING: dzn is not a conformant Vulkan implementation, testing use only.
                GPU id = 0 (Microsoft Direct3D12 (NVIDIA GeForce RTX 4080 SUPER))
                GPU id = 1 (llvmpipe (LLVM 19.1.7, 256 bits))
                GPU id = 0 (Microsoft Direct3D12 (NVIDIA GeForce RTX 4080 SUPER))
                GPU id = 1 (llvmpipe (LLVM 19.1.7, 256 bits))
                GPU id = 0 (Microsoft Direct3D12 (NVIDIA GeForce RTX 4080 SUPER))
                GPU id = 1 (llvmpipe (LLVM 19.1.7, 256 bits))
GPU id : 0 (Microsoft Direct3D12 (NVIDIA GeForce RTX 4080 SUPER)):
GPU id : 1 (llvmpipe (LLVM 19.1.7, 256 bits)):

Ubuntu

OpenGL should already be working. We'll add Vulkan support.
Go to https://ppa.launchpadcontent.net/kisak/kisak-mesa/ubuntu/pool/main/m/mesa/.
Look for mesa-vulkan-drivers_*.deb.
You'll see ...<LETTER>_<ARCH>.deb. The letter corresponds to your Ubuntu version codename. In your case, "n" for Noble.
Copy the link for the right package, https://ppa.launchpadcontent.net/kisak/kisak-mesa/ubuntu/pool/main/m/mesa/mesa-vulkan-drivers_25.0.1~kisak1~n_amd64.deb in your case.
Run wget https://ppa.launchpadcontent.net/kisak/kisak-mesa/ubuntu/pool/main/m/mesa/mesa-vulkan-drivers_25.0.1~kisak1~n_amd64.deb anywhere you have write access to on the Ubuntu WSL instance.
Run sudo apt install <PACKAGE> (in your case, sudo apt install mesa-vulkan-drivers_25.0.1~kisak1~n_amd64.deb.
Run:

cat << EOF
export GALLIUM_DRIVER=d3d12

for i in "/mnt/wslg/runtime-dir/"*; do
  [ "$XDG_RUNTIME_DIR" = "$HOME" ] && XDG_RUNTIME_DIR="/var/run/user/$UID"
  if [ ! -L "$XDG_RUNTIME_DIR$(basename "$i")" ]; then
    [ -d "$XDG_RUNTIME_DIR$(basename "$i")" ] && rm -r "$XDG_RUNTIME_DIR$(basename "$i")"
    ln -s "$i" "$XDG_RUNTIME_DIR$(basename "$i")"
  fi
done
EOF | sudo tee /etc/profile.d/wslg.sh`

You should see the following (given you install mesa-utils and vulkan-tools):

$ glxinfo | grep Device
WARNING: dzn is not a conformant Vulkan implementation, testing use only.
WARNING: Some incorrect rendering might occur because the selected Vulkan device (Microsoft Direct3D12 (NVIDIA GeForce RTX 4080 SUPER)) doesn't support base Zink requirements: feats.features.logicOp have_EXT_custom_border_color have_EXT_line_rasterization
    Device: D3D12 (NVIDIA GeForce RTX 4080 SUPER) (0xffffffff)

$ vulkaninfo | grep "GPU id"
WARNING: dzn is not a conformant Vulkan implementation, testing use only.
                GPU id = 0 (Microsoft Direct3D12 (NVIDIA GeForce RTX 4080 SUPER))
                GPU id = 1 (llvmpipe (LLVM 19.1.7, 256 bits))
                GPU id = 0 (Microsoft Direct3D12 (NVIDIA GeForce RTX 4080 SUPER))
                GPU id = 1 (llvmpipe (LLVM 19.1.7, 256 bits))
                GPU id = 0 (Microsoft Direct3D12 (NVIDIA GeForce RTX 4080 SUPER))
                GPU id = 1 (llvmpipe (LLVM 19.1.7, 256 bits))
GPU id : 0 (Microsoft Direct3D12 (NVIDIA GeForce RTX 4080 SUPER)):
GPU id : 1 (llvmpipe (LLVM 19.1.7, 256 bits)):

The reason we're using just the Vulkan driver from Kisak's repo. is that the mesa package causes llvmpipe to be used instead of D3D12. Maybe overring GALLIUM_DRIVER would work - I didn't try.

lzlrd/wslg-guide.md

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