break persian keyboard layout

I use OpenSuse13.1 by Gnome desktop and active Persian keyboard layout in that, but yesterday when i want to use Persian keyboard, type the English character!!! in most time Persian layout is not working, some time by many changing between English and Persian maybe i can type Persian Only in LaTex (Other’s software and gnome don’t support Persian layout from yesterday and i must to copy and past my text!!!)
for example i type this text by persian layout :
What i must to do for solve this? i haven’t free time to re-install OpenSuse!!!