I have a Lenovo Yoga C940 laptop, which has USB-C ports that I connect to a Dell USB-C hub when I am at my desk. The hub has a disk drive, an HDMI monitor, a soundbar, and a webcam conneccted to it. Sometimes, not all the devices connected to the hub show up when I plug the hub in, most commonly the disk or the monitor. Sometimes the hub does not provide power for my laptop. As far as I can tell something is preventing these devices from being recognized or preventing power from being set up.
I realize that there could be lots of reasons for these problems, so I’m only asking whether there is something that I can do to see more information about the attempted connection or the state of my laptop before the connection so that I can try to narrow down the problem.