[akavlie]

Interesting... because I got a ThinkPad to run Ubuntu on a couple of years ago. And you know what? It was extremely unstable. It would freeze and crash maybe 20 - 25% of the time I disconnected an external display, and from time to time at random, for no good reason.

The multi-display support is also broken (the smaller display takes on same dimensions as the larger, with hidden areas of the desktop), but that's another matter.

[Swannie]

May be a firmware/hardware issue, as I've had similar issues on Win 7, both with the screen disconnect and the projector display issues.