how do you get a 1920x1080p scale, i pluged a vga to thunderbolt in my macbookair and all there is, is a 800x600 and 1280x900, i used switchresx and i put it on 1920x1080 but there is a black bar on the left portion of my screen. Also the monitor im using is 1920x1080p hp monitor. And im not using a normal adadpter made by mac. Anyway please respond as soon as possible.
