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STATUS_GRAPHICS_DEPENDABLE_CHILD_STATUS
The child status can be used as reliable presence information
STATUS_GRAPHICS_DEPENDABLE_CHILD_STATUS is a Windows NTSTATUS value from the graphics/display facility. It belongs to the WDDM kernel display stack rather than to a Win32 GDI error alone, so the useful context is usually the adapter, VidPN object, child device, present path, or primary allocation involved in the call.
This informational status is the counterpart to uncertain child-device presence. It means the display miniport path produced a child status that the operating system can depend on while updating display-device and mode availability.
For diagnostics, this value is useful because it marks a reliable observation point. When a display disappears or appears unexpectedly, compare dependable reports with later topology changes, EDID reads, mux transitions, and hot-plug notifications to determine whether topology policy or physical detection changed the result.
What to check
- Record the child UID, connection state, and whether the report came from polling or an interrupt indication.
- Use dependable status as an anchor when analyzing later VidPN pruning or mode changes.
- If user-visible topology disagrees, inspect policy layers after child detection, not only the miniport report.
References
- Microsoft: Child devices of the display adapter
- Microsoft: Monitor hot plug detection
- Microsoft: Display/graphics driver DDI overview
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