[kubuntu] Dell E7440 Dockingstation Monitor goes black on login to Kubuntu 16.04

Whenever I login to Kubuntu 16.04, my monitor coected through a docking station goes black. Sometimes (~50%) it goes black before I comes to the login page. This startet recently.

PC: Dell Latitude E7440
Graphic:
Latitude-E7440:~$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)

Anyone got any idea of how to fix it. All the issues I could find was about the nvidia driver, which I don't use.

Regards

Michael