当我输入时，sudo apt-get install kubuntu-desktop我得到以下内容：-
timetraveller@timetraveller-to-be-filled-by-o-e-m:~$ sudo apt-get install kubuntu-desktop
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:
kubuntu-desktop : Depends: ark but it is not going to be installed
Depends: baloo-kf5 but it is not going to be installed
Depends: breeze but it is not going to be installed
Depends: dolphin but it is not going to be installed
Depends: kde-cli-tools but it is not going to be installed
Depends: kde-spectacle but it is not going to be installed
Depends: khelpcenter but it is not going to be installed
Depends: khotkeys but it is not going to be installed
Depends: kinfocenter but it is not going to be installed
Depends: kio but it is not going to be installed
Depends: kio-extras but it is not going to be installed
Depends: kmenuedit but it is not going to be installed
Depends: ksysguard but it is not going to be installed
Depends: kwin
Depends: kwrited but it is not going to be installed
Depends: okular but it is not going to be installed
Depends: plasma-desktop but it is not going to be installed
Depends: powerdevil but it is not going to be installed
Depends: sddm-theme-breeze but it is not going to be installed
Depends: software-properties-kde but it is not going to be installed
Depends: systemsettings but it is not going to be installed
Recommends: akregator but it is not going to be installed
Recommends: amarok but it is not going to be installed
Recommends: apport-kde but it is not going to be installed
Recommends: apturl-kde but it is not going to be installed
Recommends: baloo-utils but it is not going to be installed
Recommends: bluedevil but it is not going to be installed
Recommends: dragonplayer but it is not going to be installed
Recommends: frameworkintegration but it is not going to be installed
Recommends: gstreamer-qapt but it is not going to be installed
Recommends: gtk3-engines-breeze but it is not going to be installed
Recommends: gwenview but it is not going to be installed
Recommends: ibus-qt4 but it is not going to be installed
Recommends: k3b but it is not going to be installed
Recommends: kaddressbook but it is not going to be installed
Recommends: kate but it is not going to be installed
Recommends: kcalc but it is not going to be installed
Recommends: kde-config-gtk-style but it is not going to be installed
Recommends: kde-config-sddm but it is not going to be installed
Recommends: kde-config-whoopsie but it is not going to be installed
Recommends: kde-telepathy but it is not going to be installed
Recommends: kdeconnect-plasma but it is not going to be installed
Recommends: kdenetwork-filesharing but it is not going to be installed
Recommends: kdepim-runtime but it is not going to be installed
Recommends: kimageformat-plugins but it is not going to be installed
Recommends: kio-mtp but it is not going to be installed
Recommends: kmail but it is not going to be installed
Recommends: knotes but it is not going to be installed
Recommends: konsole but it is not going to be installed
Recommends: kontact but it is not going to be installed
Recommends: konversation but it is not going to be installed
Recommends: korganizer but it is not going to be installed
Recommends: krdc but it is not going to be installed
Recommends: kscreen but it is not going to be installed
Recommends: ksshaskpass but it is not going to be installed
Recommends: ksystemlog but it is not going to be installed
Recommends: ktorrent but it is not going to be installed
Recommends: kubuntu-driver-manager but it is not going to be installed
Recommends: kubuntu-notification-helper but it is not going to be installed
Recommends: kwalletmanager but it is not going to be installed
Recommends: kwin-addons but it is not going to be installed
Recommends: libqt5qml-graphicaleffects but it is not going to be installed
Recommends: libreoffice-kde but it is not going to be installed
Recommends: milou but it is not going to be installed
Recommends: okular-extra-backends but it is not going to be installed
Recommends: partitionmanager but it is not going to be installed
Recommends: phonon-backend-gstreamer but it is not going to be installed
Recommends: phonon4qt5-backend-gstreamer but it is not going to be installed
Recommends: pinentry-qt but it is not going to be installed
Recommends: plasma-dataengines-addons but it is not going to be installed
Recommends: plasma-discover but it is not going to be installed
Recommends: plasma-discover-updater but it is not going to be installed
Recommends: plasma-nm but it is not going to be installed
Recommends: plasma-pa but it is not going to be installed
Recommends: plasma-runners-addons but it is not going to be installed
Recommends: plasma-wallpapers-addons but it is not going to be installed
Recommends: plasma-widgets-addons but it is not going to be installed
Recommends: polkit-kde-agent-1 but it is not going to be installed
Recommends: print-manager but it is not going to be installed
Recommends: qapt-deb-installer but it is not going to be installed
Recommends: qt5-image-formats-plugins but it is not going to be installed
Recommends: qtdeclarative5-xmllistmodel-plugin but it is not going to be installed
Recommends: skanlite but it is not going to be installed
Recommends: user-manager but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
timetraveller@timetraveller-to-be-filled-by-o-e-m:~$
我的/etc/apt/sources.list包含（完整内容在这里 -https://pastebin.com/wybNsDth)：
deb http://in.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
deb http://in.archive.ubuntu.com/ubuntu/ xenial main restricted
deb http://in.archive.ubuntu.com/ubuntu/ xenial multiverse
deb http://in.archive.ubuntu.com/ubuntu/ xenial universe
deb http://in.archive.ubuntu.com/ubuntu/ xenial-updates main restricted
deb http://in.archive.ubuntu.com/ubuntu/ xenial-updates multiverse
deb http://in.archive.ubuntu.com/ubuntu/ xenial-updates universe
deb http://security.ubuntu.com/ubuntu xenial-security main restricted
deb http://security.ubuntu.com/ubuntu xenial-security multiverse
deb http://security.ubuntu.com/ubuntu xenial-security universe
答案1
下列操作解决了原帖者的问题：
sudo rm -rf /var/lib/apt/lists/*
sudo apt-get clean
sudo apt-get update
sudo dpkg --configure -a
sudo apt-get install -f
sudo apt-get install kubuntu-desktop