Apple Watch Ultra screen remains black in the morning on charger

Hi titusm,

Thank you for participating in the Apple Support Communities. We understand your watch screen will go black and you need to force restart it to get it working again. If this has happened multiple times, then we recommend unpairing your watch and setting it up again to see if the issue persists after doing so. This article has the steps: Unpair and erase your Apple Watch

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How to unpair and erase your Apple Watch if you have your iPhone

1. Keep your Apple Watch and iPhone close together as you unpair them.
2. Open the Apple Watch app on your iPhone.
3. Go to the My Watch tab and tap All Watches.
4. Tap the info button  next to the watch that you want to unpair. 
5. Tap Unpair Apple Watch.
6. Tap Unpair [your Apple Watch name].
7. For GPS + Cellular models, choose whether to keep or remove your cellular plan. 

• If you want to pair your Apple Watch and iPhone again, keep your plan. 
• If you don't want to pair your Apple Watch and iPhone again, remove your plan. If you aren't going to pair with a different watch or iPhone, you might need to contact your carrier to cancel your cellular subscription. 

8. Type your Apple ID password to disable Activation Lock, then tap Unpair. 

Before erasing all content and settings on your Apple Watch, your iPhone creates a new backup of your Apple Watch. You can use the backup to restore a new Apple Watch. After your Apple Watch unpairs, you'll see the Start Pairing message.

Now you can set up your Apple Watch again or turn it off if you're selling it or giving it away.

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If that doesn't help, we recommend contacting Apple Support for further assistance. Contact Apple Support

Take care.

I unpaired the watch and setup again as a 'new' watch without backup. This resolved my issue. (for now)

Try calling

Click here > Contact Apple for support and service - Apple Support

Same. It was working fine until yesterday.

I have the same blank screen when alarm goes off and Apple Watch is charging on the charger (The alarm is triggered by sleep schedule)

Blank screen but I could snooze. That means the input was working but the screen was blank. Putting it back on charger brought the display back.

I unpaired and paired the watch and restored from backup, same issue happened this morning.

Hopefully it is a software issue.

WatchOS is on 9.1; iOS 16.1.1 (updating to iOS 16.1.2 now)

Unfortunately the issue came back again. I didn't change a single setting on phone or watch. Except customized the watch face.

I wonder if it has to do with me using two Apple Watches. I use an old watch for sleep tracking and ultra is on charger overnight.

Sent a message to tech support person, haven't heard from them yet.