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
I managed to get it kinda working. The flashing issue with the Samsung
seemed to be in a stale monitors.xml file. Posting for reference:
Boot laptop separate, then remove ~/.config/monitors.xml and /etc/gnome-
settings-daemon/xrandr/monitors.xml
Shutdown. Place laptop on Ultrabase. Boot, system
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