Skype не может быть установлен на Ubuntu 14.04.1

Я просто установил Ubuntu 14.04.1 на своем компьютере:

     mohsen@Bob:~$ uname -a
     Linux Bob 3.19.0-33-generic #38~14.04.1-Ubuntu SMP Fri Nov 6 
     18:17:28 UTC  2015 x86_64 x86_64 x86_64 GNU/Linux

Но я не могу установить скайп на нем. Я получаю следующую ошибку. Я предполагаю, что пропускаю некоторые зависимости.

     mohsen@Bob:~$ sudo apt-get install skype
     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:

     libgl1-mesa-glx : Depends: libudev1 but it is not going to be installed or
                                libudev0 but it is not installable
     skype : Depends: skype-bin
     E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

Я пытался выполнить шаги в следующей ссылке:

Как установить Skype 4.3?

но когда я ввожу

      sudo apt-get install sni-qt:i386 

Я получаю следующую ошибку:

      mohsen@Bob:~$ sudo apt-get remove skype skype-bin:i386 skype:i386
      Reading package lists... Done
      Building dependency tree       
      Reading state information... Done
      Package 'skype' is not installed, so not removed
      Package 'skype:i386' is not installed, so not removed
      Package 'skype-bin:i386' is not installed, so not removed
      0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
      mohsen@Bob:~$ sudo apt-get install sni-qt:i386
      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:
      sni-qt:i386 : Depends: libc6:i386 (>= 2.2) but it is not going to be installed
           Depends: libdbusmenu-qt2:i386 (>= 0.3.2) but it is not going to be installed
           Depends: libgcc1:i386 (>= 1:4.1.1) but it is not going to be installed
           Depends: libqt4-dbus:i386 (>= 4:4.6.1) but it is not going to be installed
           Depends: libqtcore4:i386 (>= 4:4.7.3-1ubuntu3~) but it is not going to be installed
           Depends: libqtgui4:i386 (>= 4:4.7.3) but it is not going to be installed
           Depends: libstdc++6:i386 (>= 4.1.1) but it is not going to be installed
       E: Unable to correct problems, you have held broken packages.

Какие-либо мысли о том, почему это происходит? Как я могу установить скайп?