I have Elo touch screen, where i have been trying for long long time, which is failing. I now figure out that i have to use
xserver-xorg-input-evtouch, which is the only one worked for many others.
But while installing i do not find it under
11.10 and my system is 64-bit. (Evtouch installation for dual head 1 normal monitor, second one as touch screen, where cursor orientation is breaking.)