some udev thing it think......
http://gnometechblog.weebly.com/debianubuntu-tips1.html
http://ubuntuforums.org/showthread.php?t=1896059&page=2
http://www.ostertag.name/HowTo/debian/Touchscreen_eGalaxy.shtml
http://www.zalman.ostergaard.net/69-touchscreen.rules
http://wiki.linuxmce.org/index.php/Egalax-Touchscreen