I'm using deepin for 2 or 3 months. I bought a new monitor and i want to use both of them. I have 2 graphic cards. One of them is amd radeon r7 and the second one is in motherboard intel xeon e3-1200. So it means i have 2 ports to connect monitors. I was using dual monitors in windows with iGpu Multimonitor settings in bios, and it was working well. But in deepin, i cant use it. I did everything same as windows but it doesnt make it double.

After selecting deepin os, i see "DEEPIN" logo both of my monitors and after 5-10 second one of them(igpu, motherboard intel) is going sleeping mode and i can only use other one.

How can i use dual monitor in deepin os. Sorry for my English again. Thank you