30″ Display Pixelation or Resolution Problem
If you have a 30″ monitor with a resolution of 2560×1600 but have problems with the screen highly pixelated and blurry on resolutions higher than 1920×1200 or if the screen only supports a resolution of 1920×1200, you are probably using the wrong cable.
For resolutions up to 2560×1600, you need to use a Dual-Link DVI cable as the Single-Link cable only supports a maximum resolution up to 1920×1200. The Dual-Link DVI cable is thicker when compared to the Single-Link cable.
Hope this helps for any frustrated users out there!
