Two videocard, one monitor for each. Second monitor not work

Guys, i have a problem.
I have two v-card - radeon in first pci-e slot and intel hd in mobo. In hdmi on radeon i have first monitor, in vga on mobo i have second monitor. In Parameters tool i have only first. On log-in screen i have two working monitors.
What i have to do for use both monitors?