For CentOS4. /etc/X11/xinit/xinitrc.d/xinput.sh #export LC_ALL="en_US.UTF-8" export XMODIFIERS=@im=SCIM #case matters for this variable! export GTK_IM_MODULE=xim export QT_IM_MODULE=xim #export GTK_IM_SCIM_CONFIG_MODULE=simple export GTK_IM_SCIM_IMENGINE_MODULES=table