Setup: New System76 Lemur laptop running Ubuntu Unity 12.10 is connected via VGA cable to a new dell Ultrasharp u2312hm 23-inch monitor.
Symptom: The Dell monitor has an annoying flicker, like high-speed waves of darkness passing over it, pretty subtle at times, but very annoying at others. The flicker seems to increase when I type or move the mouse.
Why I don't think it is the Dell monitor's fault: I connected the monitor to an old Dell laptop and there was no flicker.
Question: Is there a known solution?