Lock screen password input box missing on all displays with 4-monitor setup after wake from sleep

I am not running the latest macOS, but I do not recognize the two left most Icons at the top of your display. what is the one that shows ABC and the one next to it that looks like an arch?

if these are third-party add-ons, they could conceivably be contributing to the problem.

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in general, To determine whether added software is the problem, run in Safe Mode, where no third-party items are loaded. Display acceleration extensions are also not loaded, so screen updates may be wonky and slow, but ultimately correct.

"Works in Safe Mode, Fails in regular mode" implies, "it's something you added."

Start up your Mac in safe mode - Apple Support

“I tried swiping up with 2, 3 and 4 fingers several times but it still didn't work.”

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Thank you for clarifying this. This seems to be catching on. So, report it.

Mirror the Mac’s Screen to Only Screen:

Hold Down: [command + F1] with only one screen connected.

To the OP and ALL those Affected.

Report this to Apple:

Do your Part: Inform Apple of your feedback of this issue. Include how you’ve troubleshot this, and your results. Apple wont get back to you directly, but the more feedback they receive from its users, the more likely they will know what needs to be fixed, and what their customers prefer in updates, and future macOS versions to come.

1. Go Here: Feedback - macOS - Apple
2. Select: "Bug Report" for the "Feedback Type"
3. Select: "Software/Firmware Update" for the "Feedback Area"
4. Comment: that is all occurred after installing an update, and how you have troubleshot this this far. Include the URL of this thread.
5. Proceed from there as necessary

"Lock screen password input box missing on all displays with 4-monitor setup after wake from sleep"

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Swipe Up on Trackpad wth Three Fingers:

Have happens when you hold down three finders on your Trackpad, and the swipe up? See if you can get to the login screen. Report Back the Results.

“I also encountered the same issue on my MacBook Air. BTW, my MBA was not connected to any eternal monitors.”

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Report this.

Your photo show the clock on exactly ONE of those displays.

Why does that display's wallpaper appear different from the others?

What make&model display is that? Is that a display similar to a 4K or 5K display with "the bottom part missing" ? i.e. slightly shorter that a full 4K or 5K display?

"I have been facing this issue too, even when not connected to monitors. It generally happens when I leave the mac unattended overnight or long hours."

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What's your MacOS?

Have you just upgraded to macOS 27? Or is another macOS version installed?

To find Out...

1. Go to: Apple menu
2. Select: About This Mac
3. View: "macOS"

Using Terminal in Recovery Mode:

Having this issue...

1. Power Off: your Mac by holding down the power button
2. Power On: the Mac
3. Boot: in Recovery Mode
4. Click: Other
5. Click: Utilities menu
6. Select: Terminal

Use this command:

sw_vers

Having the same thing but it doesn’t matter whether I have external displays connected or not. Blind typing the pw does nothing, using the fingerprint scanner does nothing, swiping the trackpad with fingers from 1 to 5 does nothing. The only thing I can do is to force the laptop off by long pressing the power button

I have been facing this issue too, even when not connected to monitors. It generally happens when I leave the mac unattended overnight or long hours.

I tried swiping up with 2, 3 and 4 fingers several times but it still didn't work.

I also encountered the same issue on my MacBook Air. BTW, my MBA was not connected to any eternal monitors.