Used to have one of these.
It had exactly the same problem with my standard 15" Planar LCD. I didn't think it was a driver problem, just a shitty integrated graphics (i845G ?). I was trying to put a "real" gfx card inside, but the mobo (made by LiteOn, model NR135 I believe) in my d220 did not have AGP slot soldered in... Seems they needed to save $0.50 in manufacturing costs.