A new tool is available for evdev touchscreen calibration, evcalibrate. http://sourceforge.net/projects/evcalibrate/
First, apologies to the creator(s) of ev_calibrate. I picked the name without first considering the existence of similarly named software. - Evcalibrate uses a very simple approach to determining the filpx, flipy, swapxy values. Only 4 screen touches are required. - Written in c++/qt/opengl, quite a few packages are required to build/deploy. - Support is pretty good for certain ELO, 3M, and eGalax screens. I've not had access to other hardware so beyond those I can't be certain. - Some patching of evdev was required to better support the 3M and eGalax screens. These patches are available from the same project site, http://sourceforge.net/projects/evcalibrate/ Feedback/criticism is welcome, especially for users of new/different hardware. - Alan
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