This monitor is the worst I've ever used. I had the same problem as everyone here, and there's no doubt in my mind now that both Viewsonic's quality control and support line are horrible. My situation was so disgusting (I made a thread a while back recording it, but it's not worth digging back up) that I ended up bringing it to the BBB and having Viewsonic give me a full refund. Admittedly they became much more polite once I made the BBB file, but it really shouldn't take such extreme measures to get a working display, and that's to say nothing of the wasted time and shipping costs.
No more Viewsonic for me.
No more Viewsonic for me.