I am connecting to 2 Asus PB328Q monitors (2k) via a TAA compliant IOGear GCS1644 dual monitor DVI KVM. Only thing “odd” is that I use active DisplayPort to DVI adapters (GDPDVI4KA). This works fine with my other PCs. But on HP ZBook 15 3G laptop connecting via a UD-6950 4K docking station, the 2nd monitor has started to periodically connect and disconnect - seemingly at random. It worked fine until yesterday. Not sure what changed.
When I have the problem, Display Settings only show one monitor and the laptop screen. When I don’t, both monitors and the laptop screen show up.
Running Win10 Pro 64bit 1607, I’ve upgraded my nVidia driver to latest on HP site and the DisplayLink to 8.5 M1.
Today, trying something different, I turned off the laptop screen in Display Settings. After about 15-20 minutes, the screens flickered and all 3 screens were active with the “proper” screen order as I had set last week.
Yesterday, I downloaded and ran PlugDebug. The output on monitors was: Intel® HD Graphics 530, DisplayLink USB Device \.\DISPLAY8. Today, I ran when all were active and have Intel® HD Graphics 530, DisplayLink USB Device \.\DISPLAY8, DisplayLink USB Device \.\DISPLAY9. File sizes of the zip files changed from 2603kb to 3273kb.
Not sure where to look. Only thing I have not exhaustively tried is cable swapping. Although I have done some. Any advice would be appreciated.