Comment 1 for bug 390816

Confirming, this one annoys me personally.

In order to use my docking station I have to plug in my computer and then hit the "switch displays" button, requiring me to open my laptop. Once it's no longer outputting to the laptop screen I then close the laptop, but my monitor output goes dark until I move the mouse a bit.

Gnome-power-manager shouldn't turn off the output, even when this setting is enabled, when using an external monitor. I'm not quite sure how to handle the twinview case - perhaps then only blanking the laptop screen (disabling twinview) would be the best solution.