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