I have a twinview setup with two identical Dell 3007WFP-HC monitors and a Quadro FX 3800. One of the monitors is connected via Dual Link DVI and the other is through a DisplayPort-Dual Link DVI adapter. The display that is connected through the adapter has this weird vertical interleaving with artifacts.
I've swapped the displays and it follows the display with the adapter. The only thing I could tell from the Xorg.0.log file was that it couldn't read the EDID information from that display.
Anyone have any ideas what changed with versions after 295.71 that could have effected this?