[ Thanks to Jeremy
Mack Wright for this link. ]
“Welcome, this is an Innovations Tech Tip. I recently did some
work with an ELO Touchsystems 1515L 15″ LCD Desktop
Touchmonitor. I was pleased with the touchmonitor’s hardware and
performance, but in order to make it work properly in Linux I had
to find a suitable calibration program. Out of the box on several
distributions this touchscreen exhibits Y-axis inversion, where
touching the top of the screen moves the cursor to the bottom and
vice versa. xinput-calibrator is a freedesktop.org project that
worked well for calibration, fixing the Y-axis inversion issue, and
as a bonus it works for any standard Xorg touchscreen driver. “