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| ERROR_GRAPHICS_INVALID_MONITORDESCRIPTOR | ERROR_GRAPHICS_MONITORDESCRIPTOR_ALREADY_IN_SET |
ERROR_GRAPHICS_MONITORDESCRIPTOR_NOT_IN_SET
ERROR_GRAPHICS_MONITORDESCRIPTOR_NOT_IN_SET indicates an ownership mismatch. A descriptor-info record acquired from one monitor descriptor set is valid only with that set and for its documented lifetime. Equal EDID bytes from a later read do not turn an old record into a member of the new collection.
This commonly follows hot-plug, docking, KVM switching, or an EDID override update. Reacquire the current monitor interface and enumerate descriptors again instead of preserving record pointers or IDs across generations. If code performs parallel capability processing, tie every work item to the monitor-set generation that produced it.
Generation-safe processing
- Attach a connection-generation token to parsed descriptor work.
- Cancel pending parsing when the target reports a new monitor.
- Release descriptor information through the same set interface that acquired it.
- Do not use matching byte content as proof of object membership.
Microsoft: descriptor enumeration and release functions
Microsoft: VidPN and monitor object lifetimes
Linux DRM/KMS: connector reprobe and EDID property updates
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