DXGK_DIAG_DISPLAY_LINK_STATE - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// dispmprt.h
typedef enum _DXGK_DIAG_DISPLAY_LINK_STATE {
DXGK_DIAG_DISPLAY_LINK_STATE_UNINITIALIZED,
DXGK_DIAG_DISPLAY_LINK_STATE_NOTAPPLICABLE,
DXGK_DIAG_DISPLAY_LINK_STATE_STABLE,
DXGK_DIAG_DISPLAY_LINK_STATE_FAILED,
DXGK_DIAG_DISPLAY_LINK_STATE_CONTINUOUS_TRAINING,
DXGK_DIAG_DISPLAY_LINK_STATE_CONTINUOUS_TRAINING_STABLE,
DXGK_DIAG_DISPLAY_LINK_STATE_CONTINUOUS_TRAINING_FAILED
} DXGK_DIAG_DISPLAY_LINK_STATE;
View the official Windows Driver Kit DDI referenceNo description available.
DXGK_DIAG_DISPLAY_LINK_STATE provides the display link state of the target to the operating system (OS) when it is gathering nonintrusive display diagnostic information.
DXGK_DIAG_DISPLAY_LINK_STATE_UNINITIALIZEDReserved for OS use during diagnostic initialization.
DXGK_DIAG_DISPLAY_LINK_STATE_NOTAPPLICABLEA driver should return this value if the target is of a type where there is no concept of link or there is no negotiation/handshaking between display hardware and the monitor (for example, VGA targets). This value should never be used for a DisplayPort based target.
DXGK_DIAG_DISPLAY_LINK_STATE_STABLEA driver should return this value if the link is in a stable state, indicating that negotiation/handshaking has been completed and the link is ready to receive pixel data.
DXGK_DIAG_DISPLAY_LINK_STATE_FAILEDA driver should return this value if the link is in a failed state after attempting to negotiate the bandwidth or any other parameters with a given sink, such as monitor, hub, dongle, etc.
DXGK_DIAG_DISPLAY_LINK_STATE_CONTINUOUS_TRAININGA driver should return this value if the link is currently being trained. It doesn't matter if this is the first or subsequent link training attempt since it is expected that when the OS calls this diagnostic DXGK_DISPLAYSTATE_NONINTRUSIVE DDI, training should already been completed in the ideal scenario. a short time frame and hence is not in a stable state.
DXGK_DIAG_DISPLAY_LINK_STATE_CONTINUOUS_TRAINING_STABLEA driver should return this value if the link is currently in a stable state but only after multiple training attempts. There are scenarios where even though the link seems currently stable it can actually go back to training anytime.
DXGK_DIAG_DISPLAY_LINK_STATE_CONTINUOUS_TRAINING_FAILEDA driver should return this value if the link is currently in the failed state but only after multiple training attempts. The difference between this state and DXGK_DIAG_DISPLAY_LINK_STATE_FAILED is that this value indicates that the link is potentially troublesome and goes into training state often.
The DXGK_DIAG_DISPLAY_LINK_STATE enumeration is a member of the DXGK_DISPLAYSTATE_NONINTRUSIVE structure. It is used while gathering display diagnostic information via calls to DxgkDdiGetDisplayStateNonIntrusive.
DXGK_DIAG_DISPLAY_LINK_STATE is not DisplayPort-specific. The link state refers to the state of any negotiation/handshaking between display hardware and the monitor before starting to send pixel data.
DXGK_DISPLAYSTATE_NONINTRUSIVE
DXGKARG_GETDISPLAYSTATENONINTRUSIVE
DxgkDdiGetDisplayStateNonIntrusive