E2414H Monitors

We are trying to connect 2 of these monitors via display port and port replicator. 2 monitors, 2 DP to miniDP cables connected to 2 DP connection in a port replicator. 

Only one monitor will work and the other will enter power save mode randomly and will not work at all.

We've gotten it to come on by unplugging them, restarting the laptop, plugging the monitors back in. That's only temporary.

Another issue, same setup, is the other will reads at full resolution but doesn't appear to be at that 1920 display.