I have a Macbook Air 13″ (late 2010) and external monitor (Dell SX2210) connected by Mac Display Adapter to VGA adapter (pre-Thunderbolt). I frequently see regions of the Dell screen glitched by wavy-jittery noise for a few seconds at a time. The size and location on the screen seems random, and is more frequent and noticeable some times than others. No glitches on the Mac screen. This has persisted through OS upgrade from Mountain Lion to Mavericks.
Would using DVI instead of VGA fix this (worth the purchase of adapter)? Anything else?