How can I debug my touchscreen which stopped working lately

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http://forums.fedoraforum.org – I have an HP tm2t wit Fedora 17 64 bit. The screen is a touchscreen that has worked with Linux for all the times, except lately. I can not tell the cause of the problem or what was the last thing[s] I did before it stopped working. The touch screen stopped working before the update to the latest version. And by the way when I boot to windows the touch screen works fine. The wacom driver still loads fine and it is listed under the commands below. What I do not know is to trace the reason why it is not working. I can not get any response from the touch screen whether from my finger or from th (HowTos)