I have purchased the new Dell latitude XT. I am new to this kind of device. The functionality of this tablet is very good for me. Actually I like the design and the model of that tablet. So I purchased that. And after that I installed the Ubuntu operating system. It is also awesome. I have the latest version of the Ubuntu. I have no problem with the performance of the device. But due to I am new to the device so I have one question. And the question is how can I get the tablet rotation button to work. Can anyone solve this problem or give me some suggestions for that. Please help me.