I have owned the TBT3 dock now for a couple of years. I have two Lenovo monitors and my peripherals plugged into the dock. I use both my personal Lenovo laptop and my Macbook Pro work laptop with the dock. I am using the original power supply and the original thunderbolt USB C cable.
Recently, I have noticed that the dock effectively “shuts down” when the connected laptop goes to sleep. The dock essentially loses power, as both LED indicators are off. I have to disconnect the USB C cable, then disconnect and reconnect the power cable to “reboot” the dock, then reconnect the UCB C cable. Sometimes, if I don’t wait more than a couple of seconds with the power disconnect, then when I connect the USB C cable, the dock powers back off.
This was not an issue for a long while, and if this was a once a day issue, it wouldn’t bother me so much. However, since it happens every time the laptop goes to sleep, which can be upwards of 10x per day, it can become very annoying.
Any thoughts here? I love the dock otherwise!