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I'm using the XPS 13 drivers (I think) on this Ultrabook XPS 14 and it works pretty well mostly, though it is a bit too sensitive for my tastes.

But randomly it will stop responding completely. My desktop is still functional and my bluetooth mouse still works so it is apparently just the touchpad that has gotten wedged.

Any suggestions on where to look?

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I've found that this series of commands gets it working again: modprobe -r psmouse modprobe psmouse –  GaryBishop Dec 21 '12 at 14:07

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