Comment 3 for bug 1082139

Ah, I forgot, this only seems to happen in the following scenario:

- I've been working in my dual-head configuration at work, with two external monitors and my laptop screen off
- I go home and work on a single display on the laptop screen
- I go back to work and log in again with my dual-head, external screens on, laptop display off

If I don't switch to running at least one session single-head / LVDS, the dual-head problem never seems to happen.