Bumping a year old thread here, but i'm having the exact same problem.
Arthur.and - Did you ever get this resolved?
I've got a Dell D6000 dock, running with a HP notebook. Everything works exactly as expected, latest drivers, latest firmware, but I noticed after I shut the computer down over night, the dock remains warm/hot to the touch.
Did some investigation using a "Kill-A-Watt" electricity meter, and I notice the same. Shut down the computer. Power usage drops to basically nothing (0.4W), then after a few seconds, ramps back up to between 5 and 11W.
If I yank the USB whilst the computer is running, power drops to nothing as well, but if I do it after I've shutdown, power usage remains high/dock stays hot, and I've got to plug it back into a running computer and pull the USB to get it to return to a true "standby" state.
I tried a second D6000 dock, and it is exactly the same.
No USB devices, only a single HDMI to my second screen. (First screen is direct to the laptops HDMI.)
Tried disabling PCI-E link state, USB selective suspend, and wake timers from Windows power management, but they made no difference.
Anyone have any ideas?
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