我最近在一台笔记本电脑上安装了最近发布的 16.04 操作系统。我首先尝试从软件中心安装 VLC 媒体播放器，但和许多其他人一样，我无法做到这一点（或任何第三方应用程序）。
然后我尝试从终端安装 VLC。
sudo apt-get install vlc
我收到一条错误，指出我有未满足的依赖项：
"Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
vlc : Depends: vlc-nox (= 1:2.0.6-dmo3) but it is not going to be installed
Depends: libavcodec54 (>= 8:1.0.0) but it is not going to be installed
Recommends: vlc-plugin-notify (= 1:2.0.6-dmo3) but it is not going to be installed
Recommends: vlc-plugin-pulse (= 1:2.0.6-dmo3) but it is not going to be installed
E: Unable to correct problems, you have held broken packages."
我尝试了该站点上列出的所有针对类似问题的修复方法，但似乎都无法解决我的问题。