There is DEFINITELY something wrong with the HDMI inputs on this Dell monitor. Tried disabling PBP mode and just using a single HDMI input, but it still cuts out after a few minutes.Tested the Mac with 2 USB-C to HDMI dongles: If I hook up both HDMI dongles and use both HDMI inputs on the monitor, the display adapter's Monitor tab shows HDMI, but this time, BOTH of them cut out after a few minutes.Updated Boot Camp Graphics driver to version 6.3.Since your message I have also tried the following: I do not have another computer with USB-C, but this HDMI dongle has worked fine on my previous monitor without issue. * Have you replicated the issue when testing the U3818DW on a different computer?

* Press the U3818DW Menu button to open the monitor OSD (On Screen Display) -Others. * What resolution and Hz is the U3818DW running? I do not like Easy Arrange.) Note that the cutting out only occurs with the HDMI input, regardless of whether or not the USB-C is also connected or PBP is on/off.

(I am doing this because I wish to split the monitor into 2 screens using PBP mode to continue using Windows Snap in 8 available panes. (2) Apple USB-C to HDMI dongle direct to Dell monitor. I am using two of these plugs as follows: (1) USB-C cable direct to Dell monitor for display and keyboard/mouse connected to Dell monitor. * List all of the video out ports on the laptop

Macbook Pro Late 2016 15' with an AMD Radeon Pro 450 * To what Laptop model is the U3818DW attached? * What is the 20 digit alpha-numeric U3818DW serial number and A0x revision? Purchased through my company's procurement portal via ConvergeOne * Was the U3818DW purchased directly from Dell or some reseller?

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