1.卸载原有的输入法，fcitx或ibus。如卸载fcitx：
sudo apt-get remove fcitx*（如不需保留配置文件用purge）
sudo apt-get autoremove（自动卸载依赖软件）
2.从http://pinyin.sogou.com/linux/?r=pinyin下载安装程序
3.双击sogou_pinyin_linux_1.0.0.0018_amd64.deb进行安装，发现界面显示异常，经过搜索解决方案如下
4.安装compton
sudo add-apt-repository ppa:richardgv/compton
sudo apt-get update && sudo apt-get install compton
5.vi ~/.compton.conf，写入内容如下：
backend = "glx";
paint-on-overlay = true;
glx-no-stencil = true;
glx-no-rebind-pixmap = true;
vsync = "opengl-swc"; # These are important. The first one enables the opengl backend. The last one is the vsync method. Depending on the driver you might need to use a different method.
# The other options are smaller performance tweaks that work well in most cases.
# You can find the rest of the options here: https://github.com/chjj/compton/wiki/perf-guide, and here: https://github.com/chjj/compton/wiki/vsync-guide
# Shadow
shadow = false; # Enabled client-side shadows on windows.
no-dock-shadow = true; # Avoid drawing shadows on dock/panel windows.
no-dnd-shadow = true; # Don't draw shadows on DND windows.
clear-shadow = true; # Zero the part of the shadow's mask behind the window (experimental).
shadow-radius = 7; # The blur radius for shadows. (default 12)
shadow-offset-x = -7; # The left offset for shadows. (default -15)
shadow-offset-y = -7; # The top offset for shadows. (default -15)
shadow-exclude = [
"! name~=''",
"n:e:Notification",
"n:e:Plank",
"n:e:Docky",
"g:e:Synapse",
"g:e:Kupfer",
"g:e:Conky",
"n:w:*Firefox*",
"n:w:*Chrome*",
"n:w:*Chromium*",
"class_g ?= 'Notify-osd'",
"class_g ?= 'Cairo-dock'",
"class_g ?= 'Xfce4-notifyd'",
"class_g ?= 'Xfce4-power-manager'"
]; # The shadow exclude options are helpful if you have shadows enabled. Due to the way compton draws its shadows, certain applications will have visual glitches
# (most applications are fine, only apps that do weird things with xshapes or argb are affected).
# This list includes all the affected apps I found in my testing. The "! name~=''" part excludes shadows on any "Unknown" windows, this prevents a visual glitch with the XFWM alt tab switcher.
# Fading
fading = true; # Fade windows during opacity changes.
fade-delta = 4; # The time between steps in a fade in milliseconds. (default 10).
fade-in-step = 0.03; # Opacity change between steps while fading in. (default 0.028).
fade-out-step = 0.03; # Opacity change between steps while fading out. (default 0.03).
#no-fading-openclose = true; # Fade windows in/out when opening/closing detect-client-opacity = true; # This prevents opacity being ignored for some apps. For example without this enabled my xfce4-notifyd is 100% opacity no matter what.
# Window type settings
wintypes:
{
tooltip = { fade = true; shadow = false; };
};
6.重启系统发现一切正常
参考连接：
http://www.cnblogs.com/A-Song/archive/2013/04/01/2993194.html
http://askubuntu.com/questions/451095/lubuntu-14-04-and-fcitx-qimpanel-how-to-remove-this-black-square/451285#451285
http://ubuntuforums.org/showthread.php?t=2144468