gdm 配置文件的一个问题

今天想整一下xdmcp， gdm 配了半天也不出个所以然。
在我机器上 /etc/gdm 目录里除了 gdm.conf gdm.conf-custom 还有个 gdm-cdd.conf
而且看 gdm 启动的命令行里竟然也是用 gdm-cdd.conf

根据 https://bugs.launchpad.net/ubuntu/+source/ubuntustudio-look/+bug/153837 里面的说法，这个是 ubuntustudio 的一些包搞的鬼。

于是就把 ubuntustudio 相关的所有包（主要是主题）删去，问题解决。

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