所以我知道我做错了什么，我只是不知道如何解决它。
我使用了 Unity Glass mod：http : //www.omgubuntu.co.uk/2012/07/unity-glass-offers-refined-new-look-for-the-unity-launcher
删除它后，我无法重置 unity 并且它不起作用。
即使在清除 Unity 并重新安装之后，我似乎也无法替换丢失的文件。
$unity --reset
WARNING: Unity currently default profile, so switching to metacity while resetting the values
unity-panel-service: no process found
Checking if settings need to be migrated ...no
Checking if internal files need to be migrated ...no
Backend : gconf
Integration : true
Profile : unity
Adding plugins
Initializing core options...done
compiz (core) - Warn: failed to receive ConfigureNotify event on 0x1c00027
Initializing composite options...done
Initializing opengl …