This morning before work I did some tinkering with the setup, I tried old drivers (19.7.5, 19.7.4 and 19.7.3) but nothing changed (not sure I should try .2 and .1?).
The hub works, when I boot it works in mirror mode and the four screens just work. When there is no driver installed (windows then uses the microsoft basic display driver, or how it’s called), it’s also in mirror mode and just works (so I think we can rule out a defective port?).
As soon as I install the amd driver three screens turn off, only one stays active (and the two screens directly connected to the card turn on).
Then something I noticed about the ports on the hub, it has four connections, lets call them CON1, CON2, CON3 and CON4. When I connect a sreen to CON1 it turns on, every screen after that stays off (also after pressing the reset button).
When you first connect CON4 it turns on, the ones after that stay off. BUT, if you start with CON4 and press the reset button he always switches over to the lowest connected port. So if you connect CON4 first and then CON1, CON4 is on, you press the reset button and the screen on CON1 turns on, CON4 turns off…
Same when you start with CON3, it’s on, you connect CON2 (stays off at first), push the reset button, CON2 turns on, and CON3 turns off…
I hope you understand all of this and are something with it. 😉 Trying my best to explain it in English. 🙂