Dell 9350 (XPS 13) External HDMI Monitors Attached to USB C Hub do not resume from sleep

Hi, I'm wondering if anyone else can offer a fix for this problem. I have:

• Dell XPS 13 9350 (this is the QHD version with Iris 540 Graphics and a single Thunderbolt 3 USB C port).

• USB Triple Display Hub (Utech Smart Triple Display 12 in 1 Type C Model UCN 3278). This has 3 HDMI ports.

• (2) Dell E2318HR monitors connected to the USB Hub

• The problem I'm about to describe DOES NOT OCCUR in a Dell Lattitude 7480 that I also plug in to the hub.

Problem: When I plug the hub into the USB C port on the Dell 9350, everything worked as expected. Then, once the computer went to sleep, it no longer worked. The only solution I have found has been to completely turn off the computer. A simple restart has not helped.

Fixes I've tried that didn't work:

• Unplug monitors and/or hub and plug them back in.

• Reinstall graphics card driver. This works, but only initially, then the behavior returns upon the next sleep.

• Disable various power options

  • "Hybrid Sleep"

  • "USB Selective Suspend"

  • "PCI Express Link Power State Management"

  • "Turn on fast startup" turned off

  • Tried to "Hibernate" instead of "sleep" and got the same result.

Anyone have any further ideas? Any help would be appreciated.