My ThinkPad R31 is running Ubuntu 10.10 very well. Everything seems to work except resuming from sleep. When I open the lid it doesnt wake. What ever key I press I cannot get it to wake.

Any ideas on how to fix it. I googled it but I could really find a solution.

I have checked in the performance settings and found a way of disabling sleep. Well, it turns the screen off when the lid is shut but not the machine. This is a fairly ok work around, but sleep would be nice.

Simon