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STATUS_GRAPHICS_MONITOR_NOT_CONNECTED
The selected target has no connected external display
STATUS_GRAPHICS_MONITOR_NOT_CONNECTED is a target-connectivity state. The VidPN target exists, but no monitor is connected to that target at the time of the operation. It should not be read as a generic application graphics error or as evidence that another target on the adapter is disconnected.
A stale target ID after hot-plug is a common diagnostic trap. Descriptor or mode data captured while a different monitor was attached does not become valid for a target that is now empty. Re-evaluate the topology and connection state before performing monitor-specific operations.
What to check
- Log target ID, connection status, hot-plug generation, and the exact adapter output used by the operation.
- Validate cable, dock, KVM, and power state only for the selected target path.
- Discard stale monitor descriptor and mode-set handles after disconnect events.
References
- Microsoft: VidPN objects and interfaces
- Microsoft: Video Present Network terminology
- VESA Enhanced EDID Standard, Release A2
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