title: Dependencies problems in downloading and installing packages in Ubuntu 12.04LTS and held broken packages
body: <p>I am a newbie in Ubuntu. I have installed 12.04 LTS in my laptop and it was moreover all fine. I want to install packages like wine,VLC,Chromium Browser,etc I was getting various error messages,such as , </p>
  
  <p>Error 1.Package Dependencies cannot be resolved.</p>
  
  <p>While Installing Chromium from Ubuntu Software Center,</p>
  
  <pre><code>chromium-browser: Depends: libgcc1 (&gt;= 1:4.1.1) but 1:4.6.3-1ubuntu5 is to be installed Depends: libudev0 (&gt;= 147) but 175-0ubuntu9.5 is to be installed Depends: libx11-6 (&gt;= 2:1.2.99.901) but 2:1.4.99.1-0ubuntu2.2 is to be installed Depends: libxcomposite1 (&gt;= 1:0.3-1) but 1:0.4.3-2build1 is to be installed Depends: libxdamage1 (&gt;= 1:1.1) but 1:1.1.3-2build1 is to be installed Depends: libxi6 (&gt;= 2:1.2.99.4) but 2:1.7.1.901-1ubuntu1~precise1 is to be installed Depends: libxss1 but it is not going to be installed Depends: zlib1g (&gt;= 1:1.1.4) but 1:1.2.3.4.dfsg-3ubuntu4 is to be installed
  </code></pre>
  
  <p>While Installing VLC,</p>
  
  <pre><code>vlc: Depends: vlc-nox (= 2.0.8-0ubuntu0.12.04.1) but 2.0.8-0ubuntu0.12.04.1 is to be installed
       Depends: libavcodec-extra-53 (&gt;= 4:0.8-1~) but 4:0.8.12ubuntu0.12.04.1 is to be installed
       Depends: libavutil-extra-51 (&gt;= 4:0.8-1~) but 4:0.8.12ubuntu0.12.04.1 is to be installed
       Depends: libc6 (&gt;= 2.15) but 2.15-0ubuntu10.5 is to be installed
       Depends: libfreetype6 (&gt;= 2.2.1) but 2.4.8-1ubuntu2.1 is to be installed
       Depends: libgcc1 (&gt;= 1:4.1.1) but 1:4.6.3-1ubuntu5 is to be installed
       Depends: libqtcore4 (&gt;= 4:4.8.0) but 4:4.8.1-0ubuntu4.8 is to be installed
       Depends: libqtgui4 (&gt;= 4:4.7.0~beta1) but 4:4.8.1-0ubuntu4.8 is to be installed
       Depends: libstdc++6 (&gt;= 4.6) but 4.6.3-1ubuntu5 is to be installed
       Depends: libva-x11-1 (&gt; 1.0.15~) but it is not going to be installed
       Depends: libva1 (&gt; 1.0.15~) but it is not going to be installed
       Depends: zlib1g (&gt;= 1:1.2.3.3.dfsg) but 1:1.2.3.4.dfsg-3ubuntu4 is to be installed
  </code></pre>
  
  <p>While installing Cheese Camera Booth also , </p>
  
  <pre><code>cheese: Depends: libclutter-gtk-1.0-0 (&gt;= 0.91.8) but it is not going to be installed
          Depends: cheese-common (= 3.4.1-0ubuntu2.1) but 3.4.1-0ubuntu2.1 is to be installed
  </code></pre>
  
  <p>Error 2.Unable to correct problems , you have held broken Packages.</p>
  
  <p>I need solution to install the applications and packages and also to fixing this all.</p>
  
  <p>I have tried for,</p>
  
  <pre><code>sudo apt-get remove libapache2-mod-wsgi
  sudo apt-get clean
  sudo apt-get autoclean
  
  then
  
  sudo apt-get update
  sudo apt-get install libapache2-mod-wsgi
  </code></pre>
  
  <p>Error 3: <code>Unable to fetch some archives, may run apt-get update or try with --missing?</code></p>
  
  <p>This error also shows while running and executing <code>sudo apt-get update</code>
  but of no use.
  Please help me out .. or should I go for removing or changing Ubuntu Version to other if so please mention.</p>
  
  <p>Thanks</p>