Hello, I am having issues using my new Samsung U28D590 monitor with my late 2011 Macbook pro. The specs on this machine are as follows: OSX Yosemite 10.10.1 2GHz Intel core i7 16GB Ram 1333MHz DDR3 Graphics: AMD Radeon HD 6490M 256MB I am connecting this machine to the display via a DisplayPort connection and the machine detects the display. However, I can not get it to show anything from the Macbook Pro except for in 1024x768 (low resolution). I understand there are limits to the graphics card on this machine, however I just would like things to display properly scaled. Can anyone help me in terms of achieving this or possibly utilizing this display in a higher resolution with this machine? Edit: Also worth noting is that connecting this display to the machine disables audio volume controls as well as it only works in mirrored mode. Thanks!