Windows 10: Understanding Modern Standby

I am writing a program in C# where I need to communicate with a USB peripheral.Upon sleep being entered, the communication gets cut off.I have implemented PowerSetRequest successfully, but it is still cut off.My program runs in the background without user interaction.It works fine if the computer times out and enters sleep mode, but if I press the power button or select sleep from start menu, then it sees to ignore the No-CS Phase and not wait for requests to be cleared.I have tried all combinations of POWER_REQUEST_TYPE but nothing works. In one case, the laptop failed to go into sleep mode c

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How do I re-enable my modern standby sleep mode (S0)?

Modern standby (S0) is indeed designed to allow for faster wake times, which can be convenient for many users. However, one drawback is that it doesn't allow the PC to fully shut down, which means it may continue consuming some power even when in sleep mode. Additionally, some users have reported issues with laptops becoming excessively hot when placed in their backpacks while in modern standby mode.

On the other hand, S3 sleep mode is a deeper sleep state where the system is essentially powered down, resulting in lower power consumption. While wake times may be slightly longer compared to modern standby, S3 can be preferable for those who prioritize power efficiency and want to ensure their laptop doesn't generate excess heat during periods of inactivity. Here are the steps to enable Modern standby:

1. Open Registry Editor:
   
   • Press Win + R to open the Run dialog.
     
   • Type regedit and press Enter to open the Registry Editor.
     
2. Navigate to the Power Settings:
   
   • In the Registry Editor, navigate to the following path:
     
     
3. Modify the Registry Key:
   
   • Look for the PlatformAoAcOverride key.
     
   • If it exists, right-click on it and select Delete.
     
   • If it does not exist, you can skip this step.
     
4. Enable Modern Standby:
   
   • Open an elevated Command Prompt (right-click on Command Prompt and select "Run as administrator").
     
   • Enter the following command to delete the registry entry that disables Modern Standby:
     
     
5. Restart Your Computer:
   
   • Restart your computer to apply the changes.
     

Verify Modern Standby (S0) is Enabled

1. Open Command Prompt:
   
   • Open Command Prompt as an administrator.
     
2. Run Power Configuration Command:
   
   • Type the following command and press Enter:
     
     
   • This command will list the available sleep states. Look for "Standby (S0 Low Power Idle)" to confirm that Modern Standby is enabled.
     

Please feel free to reach out if you require any additional assistance. I'm here to help!

 

Is there any OS function that let us check system is going to enter modern standby?

Hi,



Thank you for writing to Microsoft Community Forums.



Windows 10 Modern Standby (Modern Standby) expands the Windows 8.1 Connected Standby power model. Connected Standby, and consequently Modern Standby, enable an instant on / instant off user experience, similar to smartphone power models. Just like
the phone, the S0 low power idle model enables the system to stay up-to-date whenever a suitable network is available.



We would suggest you to refer these articles for additional information:

What is Modern Standby?

Prepare software for modern standby

Modern standby SleepStudy



However, as you are into software development. Let me point you in the right direction, where you would get the appropriate help for this issue. I would suggest you to post your query in
MSDN forums, where we have experts and support professionals
who are well equipped with the knowledge on Modern Standby to assist you with the appropriate troubleshooting steps.



Regards,



Aditya Roy

Microsoft Community – Moderator

 

how do i enable modern standby

Please do follow up on the suggestion you received from Saltgrass. Modern Standby, if supported, is enabled in the UEFI.