Xhc usb driver5/2/2023 ![]() ![]() When the USB bus controller is active for minutes at a time in Modern Standby, it usually means that one USB device attached to the bus is not entering selective suspend, possibly because it doesn’t support selective suspend. ![]() The USB host controller ( _SB.PCI0.XHC) is active for 99% of the session duration. The system consumes 2.83 Watts of energy during 11 minutes and the DRIPS % is 0. ![]() see Standby Session 6).Ĭlick on Session 10. Notice that the system is able to consume as little as 120 mW during Standby (e.g.Open sleepstudy-report_2.html with your favorite browser. Part 1: Use a SleepStudy report to identify problemsĭownload the pre-generated sleepstudy-report_2.html report here. This means that USB devices must support selective suspend on Modern Standby devices to ensure that the SoC can enter DRIPS while the screen is off. The USB host controllers can power down only after all of the devices connected to them have entered a low power state. ![]()
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