I have a Elo AccuTouch 2216 USB touchscreen that seems automatically supported by a clean install of Ubuntu 9.04. However, to actually use it correctly, I need to run some xinput commands to invert the Y axis and calibrate:
xinput set-int-prop "EloTouchSystems..." "Evdev Axis Inversion" 8 0 1
xinput set-int-prop "EloTouchSystems..." "Evdev Axis Calibration" 32 500 3500 538 3538
These properties are shown by xinput list-props and documented as properties in the evdev Xorg input driver man page.
My questions is - where can I configure or save these settings so I don't have to ever enter again? On older versions of Ubuntu for serial touchscreens I'd add to xorg.conf, but that seems to be depreciated and these are listed as properties instead of options.