Notification sounds when in sleep mode?

pacificSurf · Jan 17, 2026

The Computer is not necessarily waking up from sleep, which is good I think. I can open the screen and it's not on. But when it's in sleep with the laptop closed, there's notification noises. Like for new emails or something.

I have disabled modern standby and network connectivity.

So why is it giving notification noises and doing that when it's in sleep?

Surface laptop 7 lunar lake. Windows 11 pro 24H2.

I have kept this unchecked, because otherwise when I wake up from sleep, theres no internet and I have to manually disconnect and reconnect to the network. I dont think this would be the cause of my issue though? If network connectivity is already disabled in standby, then I don't think I need to allow the PC to turn the power off of my Wi-fi adapter right? idk

glasskuter · Jan 17, 2026

pacificSurf said:
I have disabled modern standby and network connectivity.

Per your powercfg report, you have not disabled modern standby as it appears S3 sleep is not supported for that device. Instead it appears you are hibernating.
The system remains in S0 while in standby, allowing all background activity to continue.

Explanation of S3 vs S0 here. Modern Standby vs S3

If you think email notifications are what is generating the sounds, if you wish you can turn off notifications for individual apps (such as your email app) from settings>system>notifications. But the sounds will also be disabled while windows is active.

pacificSurf · Jan 17, 2026

Its sleep, I have hibernate but its just sleep mode, instant wake when I hit a key. Hibernate takes a lot longer.

glasskuter · Jan 17, 2026

I'm saying according to your screenshot you have Hibernate enabled (attestd to by it being an option in your power options.) You are still using modern standby when you select sleep from power options. Hibernate saves your session to disk and powers down completely, while Modern Standby allows for quicker wake times

That device is physiccally unable to use S3 sleep. When you click sleep in power options, it is S0 modern standby..
It's one of Microsoft's confusing misnomers why they call it sleep at all.

pacificSurf · Jan 17, 2026

glasskuter said:
I'm saying according to your screenshot you have Hibernate enabled (attestd to by it being an option in your power options.) You are still using modern standby when you select sleep from power options. Hibernate saves your session to disk and powers down completely, while Modern Standby allows for quicker wake times

That device is physiccally unable to use S3 sleep. When you click sleep in power options, it is S0 modern standby..
It's one of Microsoft's confusing misnomers why they call it sleep at all.

Oh so its still modern standby. Aside from my email client making the sounds, is there any way top stop that activity during modern standby, like all Activity while in this mock-sleep mode? I thought disabling networking would do it.

glasskuter · Jan 17, 2026

pacificSurf said:
is there any way top stop that activity during modern standby, like all Activity while in this mock-sleep mode?

Not that I'm aware of. Some folks consider hibernate as the lesser of 2 evils. Though hibernation does use a large hiberfile.sys file and is slightly slower to wake, modern standby has a lot of idiosyncracies one has to deal with.

pacificSurf · Jan 18, 2026

glasskuter said:
Not that I'm aware of. Some folks consider hibernate as the lesser of 2 evils. Though hibernation does use a large hiberfile.sys file and is slightly slower to wake, modern standby has a lot of idiosyncracies one has to deal with.

Yaah exactly, Hibernation writes everything to disk every time and is slower. I guess I can just disable the Wi-fi card in sleep mode and see what that does. thanks

DennyZenny · Jan 18, 2026

Maybe try turning on Do Not Disturb in the Notification center before putting the device to sleep?

Turn On or Off Do Not Disturb for Notifications in Windows 11

This tutorial will show you how to turn on or off Do not disturb mode for your account in Windows 11. Notifications are alerts from apps, system, and other senders. Starting with Windows 11 build 22557, Microsoft reimagined focus assist experiences on Windows. Do not disturb makes it easy to...

www.elevenforum.com

pacificSurf · Jan 18, 2026

DennyZenny said:
Maybe try turning on Do Not Disturb in the Notification center before putting the device to sleep?

Turn On or Off Do Not Disturb for Notifications in Windows 11

This tutorial will show you how to turn on or off Do not disturb mode for your account in Windows 11. Notifications are alerts from apps, system, and other senders. Starting with Windows 11 build 22557, Microsoft reimagined focus assist experiences on Windows. Do not disturb makes it easy to...

www.elevenforum.com

Yeah, could do that. My primary concern was just the underlying running aspect, that i didn't want the laptop running while in sleep, draining battery or turning on fans at all.

DennyZenny · Jan 18, 2026

pacificSurf said:
Yeah, could do that. My primary concern was just the underlying running aspect, that i didn't want the laptop running while in sleep, draining battery or turning on fans at all.

There's not much you can do if that laptop doesn't support S3 other than buy one that does unfortunately...

glasskuter · Jan 18, 2026

I noticed in your original post your said:

pacificSurf said:
But when it's in sleep with the laptop closed,

While modern standby has gotten better, know that one of those modern standby idiosyncracies I spoke about is that some users have reported their device overheats when in modern standby with the lid closed with even some reporting they have caught fire when carried in a bag. If it were me, I would set close lid action to hibernate.

Try3 · Jan 18, 2026

You have not yet identified the source of those notifications [other than that it is a Windows app generating them rather than an old 'desktop application'].
They should not be email notifications because your powercfg -a report says you are not connected to your network whilst in S0 Modern standby [aka S0 Low power idle].
I suggest you wait for one of those notification sounds then press a key / wiggle the mouse to bring the display up so you can find out what the notification is.

I do wonder how you thought S0 Modern Standby was disabled. Perhaps the action you took is causing the computer to run in some unsupported, non-standard way.
I had one that went haywire when I disabled S0 Modern standby; it could not read its Windows disk correctly.

pacificSurf said:
laptop running while in sleep

And I urge you not to use the word sleep at all; it might case incorrect thinking. You do not have any sleep states.
You can set your Power options, Choose what the power buttons do dialog not to show that sleep option. All it does is send your computer into a later S0 Modern standby idle condition straightaway that it would otherwise take some time to reach.

Denis

pacificSurf · Jan 18, 2026

Try3 said:
You have not yet identified the source of those notifications [other than that it is a Windows app generating them rather than an old 'desktop application'].
They should not be email notifications because your powercfg -a report says you are not connected to your network whilst in S0 Modern standby [aka S0 Low power idle].
I suggest you wait for one of those notification sounds then press a key / wiggle the mouse to bring the display up so you can find out what the notification is.

I do wonder how you thought S0 Modern Standby was disabled. Perhaps the action you took is causing the computer to run in some unsupported, non-standard way.
I had one that went haywire when I disabled S0 Modern standby; it could not read its Windows disk correctly.

And I urge you not to use the word sleep at all; it might case incorrect thinking. You do not have any sleep states.
You can set your Power options, Choose what the power buttons do dialog not to show that sleep option. All it does is send your computer into a later S0 Modern standby idle condition straightaway that it would otherwise take some time to reach.

Denis

The reason I thought it was disabled was because I followed brinks tutorial to disable modern standby where you run that CMD command. On top of that, the command says "operation completed successfully" but I guess it's misleading and is not actually doing anything because my computer doesn't support disabling it.

Because I disabled Network connectivity during modern standby I guess what mine is called is "disconnected modern standby"

Yes I need to figure out what the notification noise is it may not be emails, so I'll check next time it happens.

Try3 · Jan 18, 2026

pacificSurf said:
The reason I thought it was disabled was because I followed brinks tutorial to disable modern standby where you run that CMD command. But clearly even though the command say it was accepted

Understood.
My 'haywire' computer also completed the disabling procedure. The absence of any errors in the procedure just means the Registry edit happened [not that the computer would take a blind bit of notice of the change].
Fortunately, I'd made a system image beforehand so I was able to undo the job completely.

Do you have a home network with other computers on it?
If so, you can check whether or not they can see the computer we're discussing whilst it's in S0 Modern standby.

Denis

glasskuter · Jan 18, 2026

Try3 said:
If so, you can check whether or not they can see the computer we're discussing whilst it's in S0 Modern standby.

Denis he has network connectivity disabled while in s0. screenshot post 1

Try3 · Jan 18, 2026

glasskuter said:
Denis he has network connectivity disabled while in s0. screenshot post 1

Yes, I saw that.
Since those notification sounds are of unknown origin then it would be helpful for the OP to get confirmation that it is actually using Disconnected standby as the PowerCfg -a results indicate.

All the best,
Denis

pacificSurf · Feb 4, 2026

I think I found out what it is now, So after I put the laptop into Modern Standby "sleep", I get home, I plug the power cord in (which is a propriety slot, its not USB based), that wakes the laptop, and I suddenly get new mail notifications.
So it seems to be the power cord being plugged in, somehow triggers a wake, which then triggers connection to wifi- and thus new mail notifications.

But what's strange is when I open the laptop, the screen is still off, as if its in modern standby still.

pacificSurf · Mar 24, 2026

OKay I just caught it happening, laptop was closed in modern standby for past couple hours, suddenly I hear new mail notification noises.

and ran and opened my laptop quick to bring up event viewer. I attached 2 screenshots of the entire time period (maybe 20 seconds where it could have occurred), but also a GIF image below, which I think is the specific event and cause, its one of these 5 kernel power messages. Any idea which is relevant of these 5? And what is means?
One says "AC/DC Display Burst Suppressed....Exiting Modern Standby" But the other one says "Reason InputMouse".

Try3 · Mar 24, 2026

pacificSurf said:
in modern standby for past couple hours, suddenly I hear new mail notification noises.

Try3 said:
Do you have a home network with other computers on it?
If so, you can check whether or not they can see the computer we're discussing whilst it's in S0 Modern standby.

Denis

glasskuter · Mar 24, 2026

While viewing this thread in Edge. Open co-pilot chat in upper right corner of page, Ask this exact question - How can I manage notification sounds in modern standby on Windows 11?

It's answer analyzes everything in this thread and basically says what you have been told, but puts it all in a clear chronilogical perspective and says what you can and can not do regarding sounds when using Modern standby(s0). Through your interaction with co-pilot's questions to you, it can also analyze each of the wake event s in your event viewer screenshot
-------------------------------------
The specific answer from Co-pilot regarding why you are hearing sounds when plugging in AC power is:

Why AC power causes notification sounds

Your event logs show entries like:

AC/DC Display Burst Suppressed
Exiting Modern Standby
Reason: InputMouse

These are normal Modern Standby wake sources. Microsoft confirms that hardware interrupts (power, input, Bluetooth, network stack) can wake the SoC briefly even when the screen stays off .

So the sequence is:

Laptop is in S0 Low Power Idle
You plug in AC power
Power controller triggers a wake event
Wi‑Fi stack reinitializes
Mail syncs
Notification sound plays
Screen stays off because the system returns to standby

This is expected behavior — confusing, but expected.

Bottom line co-pilot also says that setting lid-close action to hibernate is the only guaranteed method for zero activity and zero sound.

Notification sounds when in sleep mode?

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