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AlanAlden-6104 avatar image
3 Votes"
AlanAlden-6104 asked Amo-5416 commented

Windows Hello using an external camera - 21H1

Hi,

Don't know if this has been reported, but I'm using an external windows hello camera (built into a philips 499p monitor) on a Surface laptop 3 (has a built in windows hello camera)
Running 21H1 (19043.928). When the laptop screen is open Windows hello works perfectly through the external camera.
However, when the laptop lid is closed (set to do nothing in power settings) I cannot log in using the camera, clicking the hello icon at the login screen does nothing (no error messages)
Also with the lid closed, if I log in (using PIN etc) and go into Windows Hello settings, I can improve recognition which means the camera works with the lid closed, but will not allow logging in
Hope that makes sense, can anyone help?

Many thanks

Alan

windows-10-general
· 11
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So... it's only taken me 4 months... but I've cracked it.
Simple registry change to fix
Browse to HKLM\System\CurrentControlSet\Control\Power
Then change the LidNotifyReliable from 1 to 0
Enjoy!

4 Votes 4 ·

Nice one - that reg key sorted it for me using 21H2

0 Votes 0 ·

This is awesome thanks.
I did this and its the only thing that fixes this issue for me, but every time I reboot it reverts back to 1.
Do you know if there is a way to make this change permanent?

0 Votes 0 ·

This is awesome.
This is the only thing that works for my external camera for windows Hello.
But every time I reboot it reverts back to 1.
Do you know if there is a way to make this change permanent.

0 Votes 0 ·

Only thing I can think is a group policy or something like that on your PC?
Has stayed on through multiple reboots on mine and a couple of other Surface Laptops we have here, sorry I can't be much more help on that one!

0 Votes 0 ·

Thanks, just did this on the W11 preview build and it's working!

0 Votes 0 ·

Hello @AlanAlden-6104,
Would you please tell me how things are going on your side. If you have any questions or concerns about the information I provided, please don't hesitate to let us know.
Thanks for your time and have a nice day!

Best Regards,
Daisy Zhou

============================================
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0 Votes 0 ·

Hello @AlanAlden-6104,
I just want to confirm the current situations.
Please feel free to let us know if you need further assistance.




Best Regards,
Daisy Zhou

============================================
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0 Votes 0 ·

I'm seeing the exact same thing. Frustrating it is. I use my laptop in a "clamshell" mode when docked. It will not activate the external camera IR unless the screen is open.

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I'm seeing the exact same thing. Frustrating it is. I use my laptop in a "clamshell" mode when docked. It will not activate the external camera IR unless the screen is open.

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AlanAlden-6104 avatar image
2 Votes"
AlanAlden-6104 answered Leo-4104 commented

So... it's only taken me 4 months... but I've cracked it.
Simple registry change to fix
Browse to HKLM\System\CurrentControlSet\Control\Power
Then change the LidNotifyReliable from 1 to 0
Enjoy!

· 2
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You're a rockstar. This worked for me on my Surface Book 3! Fairly embarrassing that Microsoft had no answer for this for months on end when it was so simple.

Thanks!

1 Vote 1 ·

Yeah man, you rock! Quick question for those with clean installs, is it a 32 bit DWORD, or different kind of variable?

0 Votes 0 ·
DaisyZhou-MSFT avatar image
0 Votes"
DaisyZhou-MSFT answered

Hello @AlanAlden-6104,

Thank you for posting here.

Please try the following action to see if it helps.

1.Open Computer Management\Device Manager and find the external camera.
91214-ca.png

2.Click the external camera and expand it.

For example:
91238-sa1.png


3.Right click the correct device name and select Properties. And uncheck the option "Allow the computer to turn off this device to save power".

For example:
91245-sa.png



Hope the information above is helpful.

Should you have any question or concern, please feel free to let us know.


Best Regards,
Daisy Zhou


============================================
If the Answer is helpful, please click "Accept Answer" and upvote it.


ca.png (35.6 KiB)
sa1.png (35.7 KiB)
sa.png (67.1 KiB)
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AlanAlden-6104 avatar image
0 Votes"
AlanAlden-6104 answered DaisyZhou-MSFT commented

91307-webcam.png



Hi,

Thanks for the response, unfortunately I do not get this option in properties within device manager

Many thanks

Alan


webcam.png (17.7 KiB)
· 1
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Hello @AlanAlden-6104,

Thank you for your update.

Please check can you use this external camera on other windows 10 with different operation system? If so, can you find the option "Allow the computer to turn off this device to save power" and configure it?


Best Regards,
Daisy Zhou

0 Votes 0 ·
BlintDzs-1867 avatar image
1 Vote"
BlintDzs-1867 answered BlintDzs-1867 commented

I have the exact same issue with my surface laptop 3 and Lenovo 500 IR camera. I have waited for 21H1 which has this new feature to support external camera for Windows Hello, but after install this build, nothing changed.
It works when I open the lid, not when it closed.
So what is this new feature exactly if not this to use external camera for windows hello?

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I also does not have the sleep option in device manager for cameras...

0 Votes 0 ·
ScottRegitz-1898 avatar image
1 Vote"
ScottRegitz-1898 answered ScottRegitz-1898 edited

When 21H1 was first installed (about 2 weeks ago) this new feature worked great. Every time, without fail. SB2 lid closed and my external LogiTech Brio unlocked my PC. It lasted for about 1 week and then stopped working. It reverted back to what it did before 21H1 (only works with the lid open)

My camera continues to work perfectly for TEAMS and ZOOM.

This is NOT what Microsoft advertised in this release.

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GregButler-2665 avatar image
1 Vote"
GregButler-2665 answered

I own a Surface Book 3 and am having the same issue, I can only use my Logitech Brio with Windows Hello if my laptop is open. I'm not sure if this is an example of a complete misunderstanding of a use case, or a glaring oversight of Surface users. I'm not walking around with a Logitech Brio and a USB cable using an external IR camera at the coffee shop with my laptop open. If I need to use an external camera it's almost certainly because I'm docked at home, and if I'm docked, the laptop is closed!!!

C'mon Microsoft. You made an "update" that is completely useless for every single docked Surface owner. The Surface Book is a premium product and I certainly paid a PREMIUM price for it. Please fix this and do it properly, NOW!

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SteveKlassen-3817 avatar image
0 Votes"
SteveKlassen-3817 answered Amo-5416 commented

I have 4 laptops in our business that have Windows Hello Face cameras built in...

  • 2 Dell Latitude 3390 2in1s

  • 1 Dell XPS 13 3900

  • 1 Dell XPS 13 3910(we just got this one)

The two latitude 3390s and the 3900 all work perfect with windows hello face. If the laptop is open, it looks for me via it's built in camera and logs me in. If the laptop is docked, it looks for me via my external camera (Lenovo 500 IR) and it logs me in. These 3 laptops all work great. Just a side note though... if I don't have an external IR camera and any of these 3 laptops are docked and closed, Windows Hello Face still looks for me, and of course cannot find me, because the lid is closed.

In regards to the 9310... When the laptop is open it looks for me via it's built in camera and logs me in. When the 9310 is closed and docked in the exact same dock\monitor\camera etc... as the 9300 that works. The 9310 does not look for me. It does not even try.

When the 3910 is closed. I'm not saying that the camera looks and can't find me. That's not what happens. I'm also not saying that the login screen shows an error where it can't initialize or start the camera. It does not do that either. What happens is that the Windows Hello Face feature is completely disabled if the 3910 laptop lid is closed. It's as if Windows Hello is not on the computer at all. It simply waits for you to ctrl-alt-del and log in.

I went into the Dell XPS 3910 BIOS and disabled the lid switch, and then Windows Hello Face works exactly as desired both when docked and undocked. It just has a side effect of the lid switch being disabled, meaning the laptop thinks the lid is always open. Dell has most certainly changed the way the lid switch works on their XPS 3910 because the 3900 does not have this issue, and the 2 Dell Latitude 3390 2in1s also do not have this issue.



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Amo-5416 avatar image
1 Vote"
Amo-5416 answered Amo-5416 commented

I am still having this same problem on my Surface Laptop 4.
The registry edit does not work, for the string HKLM\System\CurrentControlSet\Control\Power does not exist. The alternative option in device manager also doesn't work!
I am getting pretty tired of this, please help... Someone?!

Regards, Amo

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Weird, my laptop is a Surface Laptop 4 and that's where I discovered the reg key.
I don't work for Microsoft so can't help much more than sharing my findings to be honest.
From what I've read it's a setting that OEMs can enable
https://docs.microsoft.com/en-us/windows-hardware/customize/power-settings/power-controls-lidnotificationsarereliable

Have you done a clean install of Windows? If so might be why the reg entries aren't there

0 Votes 0 ·
Amo-5416 avatar image Amo-5416 AlanAlden-6104 ·

Hi! Thanks for your reply. I don't understand either. Mine is a company laptop and I got it completely new, so I guess it was a clean install. I'm starting to think that it is something I am going to have to live with :(
On my Surface Pro 7 which I used before this one, it wasn't an issue at all, so that makes me wonder...

0 Votes 0 ·

You can always add the needed entry manually and see if that works,

Copy/Paste HKLM\System\CurrentControlSet\Control\Power into the navigation bar in Regedit , don't search for it as a string.

1 Vote 1 ·
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paulbaker-4337 answered Amo-5416 commented

Seems it's Windows 10's way of saving power on laptops , it won't activate the external camera unless the lid is open/active to save the camera constantly being powered up to check for faces all the time.

Having similar issues here , the laptop build is tightly controlled so there is no way to get into the registry , never mind update the value.

Guess I'm stuck opening the lid a fraction of a CM to get it to work.

Defeats the process of buying a monitor with a Windows Hello camera built-in , I may as well have stuck with using a cheap external USB camera for now and waiting for the next version of Windows 10 to allow the use of external cameras for windows hello.

What I don't understand is, the camera is external and powered by the monitor already , so checking for this with the lid closed would not mean any more power use at the laptop end.

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Yes, same here. Opening the lid a fraction of a cm does the trick. Wish I didn't have to do it at all, but, you can't have everything I guess :D

0 Votes 0 ·