LG L1730SF touch screen display in Ubuntu Linux 8.04 Hardy Heron, part 2

Let’s continue with setting up the touch feature. In the end of part 1, we managed to rotate and mirror the display properly and just started calibrating it, when we encountered a problem where the cursor at first does not seem to follow the finger, and then suddenly jumps ahead. Let’s solve that next.

Note: You should only read this through, you don’t need to repeat everything I did. The actual solution is in the end of the text, so there’s what you need to do.

Since we now have two drivers in the system for the touch feature, usbtouchscreen for the display device and evtouch for converting the input events to a suitable format for X, the first question that comes to mind is, which one of the drivers is causing the jumpiness? We should go to the source of the information first, i.e. usbtouchscreen.

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