Hello Favux, it's me again.

I've tried to do it like you told me, but when i am changing the "support points" to 1 and then saving the file, it's still the same problem.
I cant use the touchscreen.
I've tried to upgrade Ubuntu to 12.10, but still the same problem.
Or may i do something wrong?
It still shows me "Multitouch 0"

Thank you in advance.

Best Regards

Markus~