Don't know if anyone has the answer on how to fix this, and it may just need to be RMA'ed. Recently purchased a Dell U3818DW Curved Monitor and it worked just fine out of the box. 5-6 hours later it stopped working. DisplayPort works fine but not the USB Type-C output. The monitor charges my MacBook Pro Touch bar but doesn't send data.
Tried: -New USB-C cable -Installed new firmware -Tried Mac and PC
* Was this U3818DW purchased directly from Dell? * What specific PC model are you testing on the U3818DW? * Turn the PC off * Turn the U3818DW off * Disconnect every cable and device from the rear and side of the U3818DW. Including the power cable * Press and hold in the U3818DW power button for 10 seconds * Reconnect the U3818DW USB Type-C cable to the PC and the U3818DW * Reconnect the power cable to the U3818DW * Turn the U3818DW on * Turn the PC on * Press the middle U3818DW Menu button * Go to Input Source * Check USB Type-C