Uninstall ibus

sudo apt-get remove ibus

Uninstall ibus and it’s dependent packages

sudo apt-get remove –auto-remove ibus

Purging ibus

(delete configuration and/or data files)

sudo apt-get purge ibus

(delete configuration and/or data files and it’s dependencies)

sudo apt-get purge –auto-remove ibus

卸载ibus后，打开系统设置会发现系统设置里面的设置项不全

重新安装unity-control-center即可

sudo apt-get install unity-control-center