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Citation bot (talk | contribs) Added date. | Use this bot. Report bugs. | Suggested by Whoop whoop pull up | Category:Microsoft Windows | #UCB_Category 5/72 |
Qwerty123M (talk | contribs) Adding local short description: "Windows operating system feature", overriding Wikidata description "feature of the Windows operating system introduced in Windows Vista" |
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{{Short description|Windows operating system feature}}
'''Timeout Detection and Recovery''' or '''TDR''' is a feature of the [[Windows]] [[operating system]] (OS) introduced in [[Windows Vista]]. It detects response problems from a [[graphics card]] (GPU), and if a [[Timeout (computing)|timeout]] occurs, the OS will attempt a card reset to recover a functional and responsive [[desktop environment]]. However, if the attempt was unsuccessful, it results in the [[Blue Screen of Death]] (BSOD). The recovery tries to mitigate the scenario where an end user superfluously reboots their device should it become unresponsive.<ref name=ms>{{Cite web|url=https://docs.microsoft.com/en-us/windows-hardware/drivers/display/timeout-detection-and-recovery|title=Timeout detection and recovery (TDR) - Windows drivers|author=[[Microsoft]]|access-date=2022-03-23}}</ref>
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Once the timeout is up and the task is not completed or preempted, the [[Kernel (operating system)|kernel]] determines that the GPU is frozen and proceeds to inform the respective driver about the detected timeout. It is then the driver's responsibility to properly reset and reinitialize the underlying GPU.<ref name=ms/><ref name=ms2/>
The OS will then do a bunch of other recovery steps needed for the system to regain responsiveness. If the entire operation was successful, the end user might see some visual
==Possible causes==
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