What does NTSTATUS 0xC01E031F (STATUS_GRAPHICS_FREQUENCYRANGE_ALREADY_IN_SET) mean?

 
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STATUS_GRAPHICS_FREQUENCYRANGE_NOT_IN_SET STATUS_GRAPHICS_STALE_MODESET

STATUS_GRAPHICS_FREQUENCYRANGE_ALREADY_IN_SET

Duplicate capability insertion

This status means the operation attempted to add a monitor frequency range that is already in the selected range set. It is not a report that the requested display mode is currently in use. The duplicate lies in the capability collection maintained for the monitor-mode context.

Look for repeat processing of the same EDID-derived range, duplicate merging of standard and detailed timing data, or an enumeration pass that appends instead of rebuilding state. A duplicate range can hide an underlying state-management mistake even when the resulting mode list appears harmless.

Keep capability enumeration deterministic

  • Log normalized range boundaries and the source of each range before insertion.
  • Clear or replace the temporary capability collection between enumeration passes when the interface contract requires it.
  • Compare against STATUS_GRAPHICS_FREQUENCYRANGE_NOT_IN_SET; the two statuses identify opposite membership failures.

References


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