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ERROR_GRAPHICS_OPM_SPANNING_MODE_ENABLED
Spanning destroys the one-output-to-one-connector assumption
ERROR_GRAPHICS_OPM_SPANNING_MODE_ENABLED is returned when the display driver cannot create a protected output because the framebuffer is spread across multiple physical connectors. OPM applies commands and status queries to a specific output; a spanning topology makes it ambiguous which connector, sink, and protection state represent the rendered surface.
Disable spanning and rebuild the display topology before retrying protected playback. Merely selecting a smaller content window does not change the underlying VidPN mapping. Capture the target ID and the physical connector count reported by the miniport, because clone mode, ordinary extended desktop, and vendor spanning modes are different configurations and should not be diagnosed as the same condition.
How to verify the topology cause
- Count physical connectors represented by the affected VidPN target.
- Record whether a vendor surround or span feature is enabled.
- Re-enumerate OPM outputs after returning to a one-target-per-connector layout.
- Compare the failing topology with normal clone and extended-desktop modes.
References
- Microsoft WDDM DDI: spanning and theater-mode rejection
- Microsoft: one OPM object per physical monitor
- Microsoft: video-output model used by OPM
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