Exclamation [q] touch problem with xperia arcs

Hi everybody, i need help for a very frustrating issue with my Xperia Arc S (LT18i).

Every time i tried to flash a CM Based rom, all works fine, except for the touchscreen, it never works after the rom boot.
I need to use USB Mouse & Keyboard to navigate inside android.

This issue appear only on CM Based Rom, not in stock based ROM.

1) I already try to flash .587 stock FTF before flashing CM Rom
2) I Flash the correct .img Kernel.

Anyone can help me?

Sorry for my bad english.
Thanks