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STATUS_GRAPHICS_VIDPN_TOPOLOGY_NOT_SUPPORTED
Valid graph, unavailable hardware design
This status is not a syntax error in a VidPN topology. The requested source-to-target graph is valid, but the adapter model cannot implement it. The constraint can come from the number of display pipelines, encoder routing, clone limitations, supported transformations, or other capabilities fixed by the driver and hardware design.
It is important to distinguish this from a temporary allocation conflict. Releasing an unrelated allocation is not a reliable fix for a topology that the adapter can never support. The diagnostic question is whether a different source/target mapping, clone arrangement, or display mode is required.
What to compare
- Record the requested topology and the adapter’s advertised source and target capabilities.
- Test a simpler arrangement, such as one source to one target, before inferring a cable or monitor failure.
- Check whether cloning, rotation, scaling, HDR/color choices, or a particular connector combination changes the support decision.
References
- Microsoft: Determining VidPN support
- Microsoft: Introduction to Video Present Networks
- Microsoft: Cofunctional mode enumeration
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