- #Sadp tool windows 10 modify timeout update
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This flicker results when the OS resets some portions of the graphics stack, which causes a screen redraw. The only visible artifact from the hang detection to the recovery is a screen flicker. The graphics stack takes the final actions and restores the desktop to the responsive state.
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The display miniport driver resets the GPU hardware state. The video memory manager, which is also part of Dxgkrnl.sys, purges all allocations from video memory. The OS resets the appropriate state of the graphics stack.
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See TDR in Windows 8 and later for additional implementation details. The OS and the driver collect hardware and other state information that can be useful for post-recovery diagnosis.
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In addition, the driver must stop accessing memory and should not access hardware. The driver must then reinitialize itself and reset the GPU. The GPU scheduler calls the display miniport driver's DxgkDdiResetFromTimeout function to inform the driver that the OS detected a timeout. To prevent timeout detection from occurring, hardware vendors should ensure that graphics operations (that is, direct memory access (DMA) buffer completion) take no more than 2 seconds in end-user scenarios such as productivity and game play. If the GPU cannot complete or preempt the current task within the TDR timeout period, the OS diagnoses that the GPU is frozen. The default timeout period in Windows Vista and later operating systems is 2 seconds. The preempt operation has a "wait" timeout, which is the actual TDR timeout. The GPU scheduler then tries to preempt this particular task. The GPU scheduler, which is part of the DirectX graphics kernel subsystem ( Dxgkrnl.sys), detects that the GPU is taking more than the permitted amount of time to execute a particular task. If the OS detects that six (6) or more GPU hangs and subsequent recoveries occur within one (1) minute, the OS bug-checks the computer on the next GPU hang.
![sadp tool windows 10 modify timeout sadp tool windows 10 modify timeout](https://www.thewindowsclub.com/wp-content/uploads/2018/06/ixixjjcxgma.jpg)
![sadp tool windows 10 modify timeout sadp tool windows 10 modify timeout](https://www.dashtech.org/wp-content/uploads/2021/04/maxresdefault.jpg)
The OS then attempts to dynamically recover from the frozen situations so that desktops are responsive again, alleviating the situation where end users needlessly reboot their systems. The operating system (OS) attempts to detect situations in which computers appear to be "frozen". TDRs enable the operating system to detect that the UI is not responsive.
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The frozen appearance of the computer typically occurs because the GPU is busy processing intensive graphical operations, typically during game play, and hence does not update the display screen. The user typically waits a few seconds and then decides to reboot the computer. One of the most common stability problems in graphics occurs when a computer "hangs", or when it appears to be completely "frozen" while, in reality, it is processing an end-user command or operation. See also TDR in Windows 8 and later for additional implementation details. This page describes timeout detection and recovery (TDR) for driver developers.