title: How to install the latest version of Mono and MonoDevelop on Ubuntu?
body: <p>I'm trying to install the latest version of the Mono framework and MonoDevelop on my system. Yesterday I tried the installation on Ubuntu (14.04 LTS) and on Debian (V8.2) today. Both installations failed. I used this official installation guide.</p>
  
  <p><a href="http://www.mono-project.com/docs/getting-started/install/linux/#debian-ubuntu-and-derivatives" rel="nofollow">http://www.mono-project.com/docs/getting-started/install/linux/#debian-ubuntu-and-derivatives</a></p>
  
  <p>I executed this commands.</p>
  
  <pre><code>sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
  echo "deb http://download.mono-project.com/repo/debian wheezy main" | sudo tee /etc/apt/sources.list.d/mono-xamarin.list
  sudo apt-get update
  </code></pre>
  
  <p>The following error occured.</p>
  
  <pre><code>root@debian:/home/administrator# apt-get install mono-complete
  Reading package lists... Done
  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:
   mono-complete : Depends: mono-devel (= 4.2.1.102-0xamarin1) but it is not going to be installed
                   Depends: mono-4.0-service (= 4.2.1.102-0xamarin1) but it is not going to be installed
                   Depends: libmono-cil-dev (= 4.2.1.102-0xamarin1) but it is not going to be installed
  E: Unable to correct problems, you have held broken packages.
  </code></pre>
  
  <p>Does anyone know a solution?</p>
  
  <p>Thanks a lot,
  Jordy</p>