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ERROR_GRAPHICS_MCA_INVALID_TECHNOLOGY_TYPE_RETURNED
Technology type is an enumerated monitor property
ERROR_GRAPHICS_MCA_INVALID_TECHNOLOGY_TYPE_RETURNED means the reply used for the monitor technology classification contains a value not defined by the claimed MCCS revision. High-level configuration code may use this classification to decide which geometry, degauss, drive, or gain operations are meaningful.
Capture the raw VCP response and avoid substituting a guessed LCD value. A malformed technology type can result from firmware nonconformance, wrong MCCS-version interpretation, or a response belonging to another command. Check the capabilities and VCP Version first, then determine whether other monitor controls remain reliable enough for low-level use.
Classification checks
- Raw technology-type value and the VCP code queried.
- MCCS revision used to map the enumeration.
- High-level function that requested the classification.
- Whether response command, length, and checksum were otherwise valid.
References
- Microsoft: high-level monitor configuration functions
- ddcutil: MCCS feature types and revision-dependent values
- VESA: Monitor Control Command Set standards
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