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Built-in keyboard and trackpad disconnected when I open laptop?

I am running MacOS Catalina 10.15.5 on my 2019 Macbook Pro.

Often, when I open my laptop, the keyboard and trackpad are unresponsive. 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."

I've tried resetting the SMC and NVRAM and rebooting in safe mode, to no avail. One thing to note is that the fingerprint reader/power button still works even if the rest of the keys on the keyboard don't—I can triple-click the power button to open the accessibility options.

I'm pretty certain this is a software issue—maybe to do with the T2 chip—because waiting usually solves the problem. Meaning, when I open the lid and nothing works, I can wait a few seconds (sometimes one or two minutes), and then everything is back working. Or I have to close my laptop for several seconds, and when I open it back up, the keyboard and trackpad usually work again.

This problem consistently happens, so if you have a solution it would be much appreciated.

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I have this same problem on my Macbook Pro 16" -- Apple has given me the run around for more than 4 months, having me wipe my machine and spend days restoring it back to no avail. I was told that it should be fixed with an update. There have been 2 updates since then and the issue still remains. One cannot wait 45 seconds to 3+ minutes every time one opens their MacBook. Apple Support has failed to solve this every time I have called in about this issue, but they have wasted hours and days of my time.

von

I have a solution. you have to push down to magic pad(force touch) when it freezed bluetooth down. it'll be done, right now!

von

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Nope! You have a hardware issue! Your’s will be the third one I’ve seen with this failure, you need a new logic board.

Hopefully your system is still under warranty get to an Apple Store ASAP!

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Thanks for the quick reply. Could you give some more details? What exactly is the problem with the logic board? Will this problem get worse over time?

If my laptop is our of warranty, can this be fixed by a third-party repair store?

von

The internal USB logic has a problem. This is the interface point of the keyboard and touchpad to the PCH logic.

Sadly, you have only Apple Stores and authorized Apple service centers which can collect your system and then ship it to the nearest Apple repair depot.

Going directly to an Apple Store is going to get your system fixed unlike the authorized service center which often give you a bit of a run around as they need to then get permission to ship it. And besides you have a better chance on getting the repair done as a warranty exception if your warranty is just over.

If you are going to have to pay for the repair it then gets into the cost of replacing the logic board Vs finding someone with the deeper skills and access to the needed parts to fix your logic board. Not everyone has the skills or the tools alone, and access to the parts.

von

@danj Do you have any idea what could have caused this problem?

I have a hardshell case—could overheating be the cause of this problem?

von

@adammiller - Likely just a defective PCH chip ;-{

von

@danj Thanks for the help—your expertise is much appreciated.

If I am unable to get it repaired any time soon, will this issue get worse over time/lead to other problems? If not, I think I can live with it until I am able to get it repaired.

von

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Strangely, I have quite the same problem on a mid-2013 MBAir, and that occurred immediately after the update to 15.6.0 and its EFI update… hardware problem?

To note is that the trackpad and keyboard both work fine for boot volume selection, and in hardware test.

Would someone stand up and still pretend it is an Hardware issue, maybe the low level working of the USB devices takes another route when the OS is running?

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I’ve been pestering apple support as i had this issue on my 2020 13” mbp and they still havent taken it for service they have gotten me to reset smc and nvram more than 5 times.

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Adam Miller wird auf ewig dankbar sein.
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