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ERROR_GRAPHICS_INVALID_MONITOR_SOURCEMODESET
ERROR_GRAPHICS_INVALID_MONITOR_SOURCEMODESET concerns the set of signal timings that the connected monitor can accept. It is distinct from a VidPN target mode set, which also reflects the adapter path and current topology constraints.
Check how the set was acquired and populated. The handle must belong to the monitor associated with the target, each member must be a valid monitor source mode, and entries derived from EDID must survive validation before insertion. Reusing a set after reconnecting the monitor or mixing modes from another target can make the entire collection invalid even when individual resolutions look reasonable.
Separate the three mode views
- Monitor source modes: timings accepted by the display device.
- VidPN target modes: signal formats currently available on the adapter target.
- VidPN source modes: surface formats produced by the scan-out source.
- The usable configuration is formed by compatibility among all three views.
Microsoft: monitor source mode set interface
Microsoft: source, target, and monitor mode sets
Linux DRM helpers: connector modes from EDID
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