As the topics aid above ,I have a problem with dual monitor via HDMI. I want to connect my laptop to the second monitor via HDMI cable. I can connect it with out any problem but the the second is display Not optimus , recommend 1600*900 60Hz And the font in the second in second is very blur and it have some cross line on the screen (Not the monitor problem) try to change the second monitor display to the recommend setting but it not working.
Maybe could be a problem with the HDMI Cable. I had such problem to connect the Laptop to the TV and solved that to use a better (shielded) HDMI Cable. Also, from what I heard, some Monitors need an extra driver if is connected to a Laptop by HDMI.