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If I put my laptop to sleep, I goes to sleep without problem (screen turns dark, music stops playing, power LED pulses, etc.).

But I can still hear Chrome notification sound constantly. Also when I move the mouse the screen turns on instantly (without any delay at all).

This makes me suspicious that the laptop is not actually sleeping. What's going on?

2 Answers 2

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I figured it out, my laptop has a feature called Connected Standby enabled. I followed these steps to disable it:

  • Start the registry editor (regedit.exe).
  • Move to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power.
  • Double-click CsEnabled and set to 0, then click OK.
  • Restart

After this, the laptop can enter "deep" sleep, so no more notification sound while sleeping and there's a bit of delay when waking up (about 1s).

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    If Windows has decided to activate this feature by default, that hopefully means your laptop CPU's "idle standby" mode (S0ix) is sufficiently low-power that it shouldn't be all that much of a downgrade from the usual "deep sleep" (S3) mode, and it probably even has been certified for that.
    – user1686
    Nov 16, 2019 at 15:40
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    Do note the warning at docs.microsoft.com/en-us/windows-hardware/design/… that Microsoft doesn't support switching between these two modes without an OS reinstall. (Although I have no idea why that would be the case.)
    – user1686
    Nov 16, 2019 at 15:41
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For anyone findind this now, Microsoft removed that registry key and GUI other settings for this.

You can find a detailed but easy to read post here:

https://www.elevenforum.com/t/enable-or-disable-modern-standby-network-connectivity-in-windows-11.3286/#option2

Archived URL (in case the OG site goes down): https://web.archive.org/web/20220729100223/https://www.elevenforum.com/t/enable-or-disable-modern-standby-network-connectivity-in-windows-11.3286/

If I copy-pasted anything from that article here, I would do everyone a disservice.

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