O pacote 'gnome-control-center' não tem candidato à instalação

Não consigo instalar o gnome-control-center. Eu o removi anteriormente devido a alguns motivos. Sempre que tento instalá-lo, recebo o seguinte:

$ sudo apt install gnome-control-center
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package gnome-control-center is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
  gnome-control-center-data

E: Package 'gnome-control-center' has no installation candidate

Tudo funcionou bem até eu instalar o servidor samba que falhou, não sei por que, mas com esta mensagem dpkg is locked. Desinstalei e fiz isso sudo apt autoremove. Depois disso, tentei reinstalá-lo, mas recebo o mesmo erro, mas com sambano lugar de gnome-control-center. Então, eu deletei manualmente todos os arquivos do samba conforme indicado por whereis samba. Depois disso começou esse problema.

ATUALIZAR:

Estou usando o Ubuntu 18.04 LTS.

ATUALIZAÇÃO 2: Saída de `cat /etc/apt/sources.list

# deb cdrom:[Ubuntu 18.04.1 LTS _Bionic Beaver_ - Release amd64 (20180725)]/ bionic main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://pk.archive.ubuntu.com/ubuntu/ bionic restricted
# deb-src http://pk.archive.ubuntu.com/ubuntu/ bionic main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://pk.archive.ubuntu.com/ubuntu/ bionic-updates restricted
# deb-src http://pk.archive.ubuntu.com/ubuntu/ bionic-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://pk.archive.ubuntu.com/ubuntu/ bionic universe
# deb-src http://pk.archive.ubuntu.com/ubuntu/ bionic universe
deb http://pk.archive.ubuntu.com/ubuntu/ bionic-updates universe
# deb-src http://pk.archive.ubuntu.com/ubuntu/ bionic-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://pk.archive.ubuntu.com/ubuntu/ bionic multiverse
# deb-src http://pk.archive.ubuntu.com/ubuntu/ bionic multiverse
deb http://pk.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
# deb-src http://pk.archive.ubuntu.com/ubuntu/ bionic-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://pk.archive.ubuntu.com/ubuntu/ bionic-backports restricted universe multiverse
# deb-src http://pk.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu bionic partner
# deb-src http://archive.canonical.com/ubuntu bionic partner

deb http://security.ubuntu.com/ubuntu bionic-security restricted
# deb-src http://security.ubuntu.com/ubuntu bionic-security main restricted
deb http://security.ubuntu.com/ubuntu bionic-security universe
# deb-src http://security.ubuntu.com/ubuntu bionic-security universe
deb http://security.ubuntu.com/ubuntu bionic-security multiverse
# deb-src http://security.ubuntu.com/ubuntu bionic-security multiverse