I have a problem with my brand new U2414H screen and XPS13 9333 ultrabook running Win 8.1. Screen is connected with supplied miniDP cable, all drivers are up-to-date and the ultrabook screen is fine. When I power the XPS up and it switches to the external monitor the screen displays random flickering horizontal blocks of white/noise, if I just press the monitor's power button off and on the screen is perfectly fine from that point on. If I restart the laptop/it goes to sleep/shutdown and then switch on again then the flickering/noise problem returns.
Any ideas?