Macbook Pro built-in keyboard disconnected when I open laptop

CraftyApple wrote:

I am running MacOS Catalina 10.15.4 on my 2019 Macbook Pro.

Often, when I open my laptop, the keyboard and trackpad are unresponsive. When it happens, I have to close my laptop for several seconds, and when I open it back up, the keyboard and trackpad usually work again. If I don't close the laptop, a window will pop up after 15-30 seconds that says "Bluetooth keyboard setup. There isn't a keyboard connected."

This is increasingly and consistently happening, so if you have a solution it would be much appreciated.

It has the sound of a cable connection problem...

You can Try resetting NVRAM/PRAM http://support.apple.com/kb/ht1379

and

Try resetting the SMC https://support.apple.com/en-us/HT201295

If your Apple keyboard doesn't work - Apple Support https://support.apple.com/en-us/HT204540

If no resolve In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"—

https://www.apple.com/retail/geniusbar/

Outside the USA

https://locate.apple.com/country

From iOS device using the app to make a online Genius Bar appointment is easy:

https://itunes.apple.com/us/app/apple-support/id1130498044?mt=8

(note: due to the temporary closure of Apple Stores and the staggered reopening there may be some delays.

ref: https://www.apple.com/shop/browse/store/temporary_closures )

Call (800) MY–APPLE (800–692–7753)

or on line https://getsupport.apple.com/

or call AppleCare Support at 1-800-APLCARE.

See if you qualify—https://support.apple.com/keyboard-service-program-for-mac-notebooks

I am going through the same exact thing with my brand new MBP 13” I literally just bought last week

I thought I was the only one going crazy, but I can assure you I'm going through same thing, except it's happening during the normal use, not open opening the macbook. The pad and keyboard simply freeze for "no reason". This must be Catalina as I had no issues while being on Mojave 2-3 weeks ago. Now I see it almost daily. Same macbook pro model.

I'm experiencing the same issue as you describe, cellulit. Mine is a brand new MBP 16" 2020. Randomly, I get the pop up "Bluetooth keyboard setup. There isn't a keyboard connected." which freezes my MBP. Eventually it comes back on its own after minutes.