MBP 13 2020 won't recognize USB devices from TB dock after sleeping and connecting to the dock. After unplugging the dock MBP crashes and does SMC reset

Device: MBP 13" 2020 10th gen i5

Catalina 10.15.6

Dock: CalDigit TS3+ with firmware 44.1


I'm not sure if this problem is exclusive to Catalina 10.15.6, but I can't say since my dock arrived after the latest update got shipped and I haven't tried if it works on 10.15.5.


Basically, I unplug the dock at night and put the MBP to sleep. After a few hours of sleep it seems to stop recognizing the USB devices plugged into the dock. The dock has a USB audio interface, a logitech wireless dongle (for G604 mouse), a DP monitor and the power supply for the dock. When I plug it after the mac has been in sleep for hours, the mac won't recognize the audio card and the mouse (just the USB issue we had in previous catalina versions with all kinds of USB hubs and USB devices), but the monitor works and everything has power supplied to it, including the USB devices.

If I then unplug the dock and replug it, often the mac straight-up crashes completely and shuts down, powering on with an error that it recovered from a problem ( it also does an SMC reset).


The error report later states: "Intel CrashLog recorded due to unexpected reset".


This reddit thread speaks of the exact same issue with a different monitor and some people with different docks:

https://www.reddit.com/r/macbookpro/comments/i0m9si


Basically, what I'm saying is that the original USB issue is not fixed yet and now it's much worse because:

  1. You can't fix the USB problem unless you restart the mac - re-plugging the devices into the dock won't solve it
  2. The macbook directly crashes and does an SMC reset if you unplug/replug the dock, wiping your unsaved data and crashing anything else you might have open at the time


Additional problem: Monitor sometimes doesn't wake up at all after mac is awoken from sleep. At one point the monitor went to sleep WHILE I was using the mac actively.


I have tried NVRAM/SMC resets and they did nothing.


I wrote an email to CalDigit and they confirmed a lot of other users have complained about this:


"Our engineers have been investigating into the brand new 2020 MacBooks as we’ve had detailed reports from several of our customers who have tried many different brands of docks, from OWC, Kensington, Elgato and ours and none of them have been able to function correctly via the latest chipsets in these Macs."


PLEASE FIX the usb/dock/monitor issues already! This is a problem of Apple devices exclusively. This is unacceptable for a laptop at this price from the year 2020. Cheap off-brand laptops do not have such issues with peripherals!!

MacBook Pro 13″, macOS 10.15

Posted on Aug 4, 2020 11:01 AM

Reply
Question marked as Top-ranking reply

Posted on Jan 16, 2021 2:25 PM

11.1 fixed it for me on my 2020 Intel MBA. I could reproduce it consistently every time before that version, and now I can't make it fail. It just picks up and keeps on going.


This is with multiple bits of TB hardware, too: a TB3 dock and an old Apple TB monitor. Both of them work, whether direct to the machine or with the monitor behind the dock.


It was bad, but it's over. Try it.

Similar questions

344 replies

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

MBP 13 2020 won't recognize USB devices from TB dock after sleeping and connecting to the dock. After unplugging the dock MBP crashes and does SMC reset

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.