Tried both ports on the E-Port and on the monitor, but it made no difference. The "screen resolution" menu still only gives me a maximum of 1920 x 1080. Could this have to do with the video card?
Ask the laptop users and DELL-Terry B here for their opinions on the Latitude E6430 GPU issues you are facing. Tell them to read through our thread.
Just to let you know, I never did get a response to my questions to the other forum. Waited weeks, reposted a few times, and nothing. I called Dell's tech support by phone and they did their best, although it ended up that I needed a DisplayPort cable. Bought one, and the problem was solved.
Well... Dell never actually got back to me, but I fixed the problem by using the mini displayport. I just had to get a different cable and the problem was solved.