我昨天在 160 GB 硬盘上安装了 Ubuntu 14.04。它目前只有一个操作系统，磁盘已完全加密。当我按下时，shutdown系统会挂起并显示文本Ubuntu。我已启用splash并得到以下几行：
wait-for-state stop/waiting
* Stopping rsync daemon rsync
* speech-dispatcher disabled: edit /etc/default/speech-dispatcher
* Asking all remaining processes to terminate...
* All processes ended within 1 seconds...
m-dispatcher.action: Caught signal 15, shutting down...
ModemManager [969]: <warn> Could not acquire the 'org.freedesktop.ModemManager1' service name
ModemManager [969]: <info> ModemManager is shut down
* Deactivating swap...
* Unmounting local filesystems...
* sda5_crypt (busy)...
* Stopping early crypto disks...
* Stopping early crypto disks...
mount: / is busy
* Will now halt
471.291801] reboot: Power down
我在另一块硬盘上的 Ubuntu 12.04 上也遇到过同样的问题，但Windows每次从 Windows 安装和关闭都成功。所以我restart从 开始Ubuntu，然后shutdown从Windows。