Hi. I’m having an issue that the Alienware 15 R2 (late 2015) laptop cannot output the display to external monitor thru USB-C/Thunderbolt 3 to DisplayPort cable connection. I’ve installed the lasted driver from Nvidia but still don’t see anything on the monitor, it says there is no signal. Besides, I connected with the same monitor and cable to my dell XPS 13, and it works flawlessly.  Hence, there must be something wrong with the Alienware 15. Does anyone have any idea?

thanks,