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Powercfg: Powercfg /lastwake Will Show You What Device Last Woke Your PC From A Sleep State. You Can

Powercfg is a command that allows you to manage power settings and view reports on a computer's power consumption and battery usage. Some of its functions include enabling or disabling hibernation, viewing available power plans and devices that support connected standby, checking what last woke the computer, and generating detailed reports on energy use and battery health. These reports can help troubleshoot issues that increase power usage or identify devices blocking power saving modes.

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289 views2 pages

Powercfg: Powercfg /lastwake Will Show You What Device Last Woke Your PC From A Sleep State. You Can

Powercfg is a command that allows you to manage power settings and view reports on a computer's power consumption and battery usage. Some of its functions include enabling or disabling hibernation, viewing available power plans and devices that support connected standby, checking what last woke the computer, and generating detailed reports on energy use and battery health. These reports can help troubleshoot issues that increase power usage or identify devices blocking power saving modes.

Uploaded by

Nimish Madanan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Powercfg

Powercfg is a very powerful command for managing and tracking how your computer uses
energy. You can use the command powercfg hibernate on and powercfg hibernate off to
manage hibernation, and you can also use the command powercfg /a to view the power-saving
states currently available on your PC.

Another useful command is powercfg /devicequery s1_supported, which displays a list of


devices on your computer that support connected standby. When enabled, you can use these
devices to bring your computer out of standby, even remotely. You can enable this by selecting the
device in Device Manager, opening its properties, going to the Power Management tab, and
then checking the Allow this device to wake the computer box.

Powercfg /lastwake will show you what device last woke your PC from a sleep state. You can
use this command to troubleshoot your PC if it seems to wake from sleep at random.
You can use the powercfg /energy command to build a detailed power consumption report for
your PC. The report saves to the directory indicated after the command finishes. This report will let
you know of any system faults that might increase power consumption, like devices blocking
certain sleep modes, or poorly configured to respond to your power management settings.

Windows 8 added powercfg /batteryreport, which provides a detailed analysis of battery use, if


applicable. Normally output to your Windows user directory, the report provides details about the
time and length of charge and discharge cycles, lifetime average battery life, and estimated battery
capacity.

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