Dell D6000, Displayport has stopped working after 6 months

[dalick]

Hi,

I have dual fujitsu 24" monitors with DP,VGA and DVI. I got the Dell D6000 about 6 months ago and have used this inte my home office several times a week with since then.
This morning I wanted to use my laptop as a third display and downloaded the displaylink drivers to get this working. When back from lunch the monitors were black with a message - "No source detected".
I tried rebooting computer, docking station, monitors several times and disconnecting everything in the dock. Still not working.
Updated the frimware on the d6000, still not working.
Uninstalled the displaylink drivers. still not working.
Then I connected my TV-screen to the d6000 with HDMI, this worked flawlessly!
I have tried connecting 3 different laptops and none of them get any display on the monitors through the d6000.

So I have came to the conclusion that either the DP in the dell 6000 somehow broke when I downloaded the displaylink drivers and connected my monitor as a third screen.
OR
My monitors does not support the displaylink driver or the d6000. But then how could it work for 6 months? And why did it not start working when I uninstalled the displaylink drivers?

Here is a log, from the support-tool, many thanks for helping.