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I have installed Ubuntu 10.10 in lenovo 4152...After the installtion the touch pad doesnot work...I am not able to find any drivers for this. Can anyone please suggest how to get the driver working..thanks

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We need more hardware information - See this question for what commands to run:… – Jorge Castro Jan 1 '11 at 16:43

Here is a solution:

sudo echo options psmouse proto=exps > /etc/modprobe.d/psmouse.modprobe

Then, reboot.

From here

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