Dual Display Issue Mac High Sierra 10.13.6

[Archie1709]

Hello friends,

I just purchased an IOGear dock GUD300 and connected two monitors via HDMI. One is HDMI to HDMI, the other is HDMI through DVI connector.

I connect from IOGear's USB3 connector into my Macbook Air which is currently in OS version High Sierra 10.13.6.

I downloaded and installed Displaylink V4.3, beta 5 driver. I made sure that the Displaylink User Agent is allowed to control my computer via the Security and Privacy setting of my Macbook.

I also connect a wireless logitech keyboard and mouse.

I made sure all the power is connected on monitors and the dock.

I connected my Macbook Air with IOGear dock via the USB3 cord.

This is what happens:

1. the screens detect a signal in HDMI
2. the screens then remain blank (a bit grey-er than the black screen when turned off or with no signal).

However, when I connect any one of the monitors directly into my MacBook Air via HDMI using my thunderbolt adapter, any one of these screens work.

Finding:

1. the monitors work individually when connected to the Macbook directly via thunderbolt HDMI adapter.
2. The wireless keyboard and mouse works.
3. The monitors detect a signal

Problem:
I don't see anything on the monitors.

I tried uninstalling the driver, and reinstalling. I even tried uninstalling the driver, and reinstalling 4.1.11 and this doesn't work.

Can you please help? I need it ASAP.