I have a CalDigit Thunderbolt 2 Dock that I can plugin to the same laptop using a Thunderbolt 2 to Thunderbolt 3 adapter, and when using this approach, the USB devices show up every single time I disconnect and reconnect, leading me to believe that this could be a Dell hardware problem, or something about how the Dell devices work with Apple's hardware or OS. I almost returned the D6000 dock until I realized the monitor was behaving the same way.
I have reset the SMC and the NVRAM with no luck. Sometimes I will reconnect the cable 5-6 times before I get all external devices to be recognized PLUS power to the laptop. sometimes on the first try, second try, or third try. If I unplug and replug the cable in multiple times, it will eventually work.
Additionally, sometimes the Dell D6000 will provide power to the laptop and other times it won't.Įssentially, each time I plug the USB-C cable in to the laptop, it is completely random as to whether things will work or not, and this behavior occurs with both the monitor hub and the dock. With both of these docks/hubs, I have the issue where I will plug in the USB-C cable to the Macbook Pro 13" and sometimes the USB devices or monitors will be recognized and sometimes they won't. I have a Dell D6000 USB-C dock and a Dell P2419HC USB-C monitor that can act as a USB-C hub. I am using a 2019 Macbook Pro 13" with Mac OS 10.15.3 (Catalina).
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