Comment 26 for bug 737891

I have the same issue as Dustin. x201 on Ultrabase docking station, connected to a Samsung 225BW monitor.

If I connect the laptop to my smallish 17" 1280x1024 Sony, I manage to hook it up in dual display mode. But if I try to disable the laptop screen it fails with a black screen /cursor. So I can't really use it in single-screen mode on the docking station.

If I connect the laptop to my widescreen Samsung 22", it directly goes to the parasited flashing screen effect.

So it looks like there are two separate bugs, one of them being specific to large screens / Samsungs.

This is also very similar to what Anmar described at bug 732050.