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ERROR_GRAPHICS_DDCCI_CURRENT_CURRENT_VALUE_GREATER_THAN_MAXIMUM_VALUE
Continuous features must return a coherent current/maximum pair
ERROR_GRAPHICS_DDCCI_CURRENT_CURRENT_VALUE_GREATER_THAN_MAXIMUM_VALUE identifies an internally inconsistent Get VCP Feature reply. For a continuous control, such as brightness on many monitors, the current value is interpreted relative to the monitor-provided maximum; a current value above that limit cannot be normalized safely.
Preserve both 16-bit values and the VCP code. Do not clamp the result silently, because the monitor may have returned swapped bytes, an unsupported-feature reply in a nonstandard form, or values requiring a different MCCS interpretation. Compare the capabilities string and VCP version, then test the same feature after a monitor reset or input change.
Range-consistency checks
- VCP code, feature type, current value, and maximum value.
- Raw big-endian bytes before conversion to host integers.
- Reported MCCS version and capabilities entry for the feature.
- Behavior after changing inputs or restoring monitor defaults.
References
- Microsoft: current and maximum VCP values
- ddcutil: continuous and non-continuous MCCS features
- ddcutil: displaying raw and interpreted VCP replies
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