One monitor is direct hdmi, (#1) the other is hdmi from UD3900 (#2). Windows 10 Pro.
All was working fine as it has for the last 6 months. Then I unplugged my laptop for a trip. When I returned and reconnected, both monitors came on for a moment and then the #2 went out and #1 was working as the only recognized monitor. I’ve tried restarting the UD-3900, the laptop and monitors. I unplugged #1, and then #2 popped on and was the only recognized monitor. I plugged #1 back in and #2 went black and #1 was once again the only recognized monitor. They can both be recognized, just not at the same time.
Help would be appreciated.