> I'm looking for a generic touchscreen calibration utility, the kind
> than prompts the user to press on the four corners of the screen.
> Does something like this exist?
Not being a xorg specialist, I know a calibration utility from binstead. But
it only works with one specific brand of touch screens. The problem I see in
your wish is that touchscreens tend to deliver their signals in different
formats and in different interfaces. And that makes it hard to develop some
generic approach. You are right in your assumption that touchscreens
basically all do the same thing. They all produce x and y coordinates.
Though, some yield more data like the strength of the impression and so on.
There are also different technologies to measure the user's activities.
Sorry that I could not help. But I do understand and support your issue and
I'd be interested to hear from you if you have found anything in that