Rozbité balíčky Ubuntu 16.04 po nové instalaci?

Po nové instalaci Ubuntu 16.04 mám poškozené balíčky a nemohu nainstalovat většinu aplikací. Zkoušel jsem od Synaptic „Opravit poškozené balíčky“, ale nefunguje to. Příklad;

sudo apt-get install steam

Výstup;

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:
 steam:i386 : Depends: libc6:i386 (>= 2.15) but it is not going to be    installed
          Depends: libstdc++6:i386 (>= 4.3) but it is not going to be installed
          Depends: libx11-6:i386 but it is not going to be installed
          Depends: libudev1:i386 but it is not going to be installed
          Depends: libxinerama1:i386 but it is not going to be installed
          Depends: libtxc-dxtn0:i386
          Depends: libgl1-mesa-dri:i386 but it is not going to be installed
          Depends: libgl1-mesa-glx:i386 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Jiný příklad;

sudo apt-get install nvidia-361

Výstup;

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:
 nvidia-361 : Depends: lib32gcc1 but it is not going to be installed
              Depends: libc6-i386 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Neexistuje žádný výstup z;

sudo apt-get clean

Snažil jsem se;

sudo apt-get install -f

Výstupy;

Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

Díky..

Přijatá odpověď:

16.04 je nový a všechny balíčky nejsou připraveny k použití na všech serverech. Používání hlavního serveru ke stažení balíčků vyřešilo můj problém.

1. Nastavení systému
2. Software a aktualizace
3. V části „Stahovat z“ vyberte „Hlavní server“

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