that dummy plug works with r290?i mean can i use igpu with r290?
Nope, you have to use real monitor cable and a real monitor. Good is most monitors have more than 1 port, use something hdmi and dvi
my monitor has 3ports:1 analog,1 dvi,1 hdmi .I plug top r290 to dvi port with dvi to hdmi adapter and plug the igpu to hdmi port.After i start pc with igpu windows 7 saying there are no amd drivers installed and they dont work