@benhillis, I haven't tried loading it explicitly, but I raised this issue hoping that in the WSL2 kernel code, perhaps it's a good idea to have it enabled by default so that manual commands don't need to be run each time WSL2 is started to load the VGEM module. It should in theory work out-of-the-box as it does in the older 5.15 kernel.

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If this a feature request, please reply with '/feature'. If this is a question, reply with '/question'.
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Invoke-WebRequest -UseBasicParsing "https://raw.githubusercontent.com/microsoft/WSL/master/diagnostics/collect-wsl-logs.ps1" -OutFile collect-wsl-logs.ps1
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• No /dev/dri on WSL2? (#5822), similarity score: 0.74

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/feature

I'm tagging this as a feature request since I have provided the solution in the workaround. No logs are really needed as this one involves building the kernel and following the steps to reproduce the issue.

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Found '/feature', adding tag 'feature'

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From https://github.com/microsoft/WSL2-Linux-Kernel/releases

We are very excited kernel module support is now available in WSL2! With this latest kernel update, a large set of loadable modules has been introduced, accompanied by an overall config file update. However, please be aware that when using a custom kernel, the default module support is disabled for now. If you’re using a custom kernel, we recommend you edit your kernel config file to build-in all of the modules that you need.

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Thanks @zcobol, I did read that as part of the release notes, but since this is to be the new LTS kernel and the default one at some point soon when you update WSL, I'd imagine that feature (CONFIG_DRM_VGEM) should be enabled by default. Perhaps it is planned to be done, but I just wanted to open an issue regarding that in case it was not (especially since VA-API is a supported and default feature set for WSL).

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The kernel module is included, can you simply load the module (sudo modprobe vgem)?

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Just updated WSL to 2.3.13 and also noticed that /dev/dri was missing. This is required for Emby Media Server to run. Using the sudo modprobe vgem worked, but if this is something that has to be done every time the server restarts, then it really should be enabled by default.

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