I just bought the U2913 and so far it looks great. The problem i have with this display is that every few minutes, the entire image will shift down about 1/2" in about half a second and then shift back so the images moves down and back really fast. This just happens once per occurrence.
System is a Dell XPS 8300 with the stock video card AMD HD 6450.
Display has the serial number CN-05YD8C-74445-41A-593L and revision number A03 built in January, 2014.
I tried to see if there is any settings that can be adjusted under display settings and also switched from Dual Link DVI to HDMI to see if that made a difference, but after switching to HDMI, i lost my post screen and the problem is still there.
Any help would be appreciated.