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Add note on GPU selection for hybrid systems #192

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Add note on GPU selection for hybrid systems
NoTuxNoBux Apr 24, 2026
7d2f985
Clarify -force-device-index should be used over -gpu
NoTuxNoBux Apr 24, 2026
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9 changes: 9 additions & 0 deletions README.md
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Expand Up @@ -68,3 +68,12 @@ uri=$(python -c 'import sys,pathlib; print(pathlib.Path(sys.argv[1]).resolve().a

xdg-open zed://file$uri
```

## Unity Editor GPU Selection

The Flatpak sets `PrefersNonDefaultGPU=true` [in the desktop file](https://github.com/flathub/com.unity.UnityHub/blob/master/com.unity.UnityHub.desktop#L11C1-L11C26), but even without it set the Unity Editor might prefer
the dedicated GPU because it seems to enumerate and select a GPU manually. If you have a hybrid GPU system, this might cause
the editor to always run on the dedicated GPU, which might be what you want but in some cases might not.

To override this, in the Hub you can right-click your project and use 'Add command line arguments' to add e.g. `-force-device-index 0`
or `-force-device-index 1` to select between available GPUs. [See also the documentation.](https://docs.unity3d.com/Manual/PlayerCommandLineArguments.html)