Hi, same issue. I got an Esprimo P920 and at the backside there are the following interfaces:
1xVGA, 1xDVI, 1XHDMI and through an extra extension card (graphi cad?) again 1xVGA, 1xDVI, 1xHDMI.
Problem: I cannot set up dual monitors (LG). The 2nd is receiving no signal. The 1st monitor is connected through the DVI slot of the extension card. I tried a lot of alternative connection configuration but could not manage to achieve dual monitor. Any hint/help is accpreiated. Thanks