fcitx can display icon but cant input chinese

gre

Debian :
    fcitx(3.4 GirlDog) can`t input chinese suddently.I met it once when I upgr
ade from sarge to unstable. I resolve it through remove ~/.fcitx.but this time
it can`t.I try several method : (1)unisntall and install;(2) install fcitx=3.
2,but the question is still .It can display the icon
dolphin9@debian-gre:~$ locale
LANG=zh_CN.GBK
LANGUAGE=zh_CN.GBK
LC_CTYPE="zh_CN.GBK"
LC_NUMERIC="zh_CN.GBK"
LC_TIME="zh_CN.GBK"
LC_COLLATE="zh_CN.GBK"
LC_MONETARY="zh_CN.GBK"
LC_MESSAGES="zh_CN.GBK"
LC_PAPER="zh_CN.GBK"
LC_NAME="zh_CN.GBK"
LC_ADDRESS="zh_CN.GBK"
LC_TELEPHONE="zh_CN.GBK"
LC_MEASUREMENT="zh_CN.GBK"
LC_IDENTIFICATION="zh_CN.GBK"
LC_ALL=
dolphin9@debian-gre:~$ cat /etc/X11/Xsession.d/95xinput
export XIM=fcitx
export XIM_PROGRAM=fcitx
export XMODIFIERS="@im=fcitx"
export GTK_IM_MODULE=fcitx
fcitx &
dolphin9@debian-gre:~$ cat .fcitx/config
[程序]
显示字体(中)=Sans
显示字体(英)=Courier New
显示字体大小=12
主窗口字体大小=12
是否使用AA字体=1

[输出]
数字后跟半角符号=1
Enter键行为=2
分号输入英文=0
大写字母输入英文=1
联想方式禁止翻页=1
LumaQQ支持=0