Extremely poor video quality on Samsung monitor with HDMI I have connected my MacBook Pro to a Samsung P2770HD monitor using a Kanex brand Mini Displayport to HDMI cable

However, the output on the Samsung monitor is absolutely garbage. It is pixellated to the point that I don't even want to look at it.

The resolution is 1600x900 (but I have tried all other resolutions as well - all with similar output)

When I connect my Windows laptop to the same monitor using DVI cables, I get 1920 x 1080 resolution and the display is crystal clear.

How do troubleshoot this?
To fix, use the monitor's menu and change Size&amp;Position/Image Size to Screen Fit. 

(I connected a MacBook Pro 2013 via HDMI to the same monitor and the quality was horrible.)