De acordo com esta resposta em “Ask Ubuntu” este comando deve funcionar:
sudo apt-get remove akonadi-backend-mysql akonadi-server akregator amarok amarok-common amarok-utils appmenu-gtk appmenu-gtk3 appmenu-qt apport-kde apturl-kde ark bluedevil cdparanoia cdrdao docbook-xsl dolphin dragonplayer dvd+rw-tools freespacenotifier gnupg-agent gnupg2 gpgsm growisofs gstreamer0.10-qapt gtk2-engines-oxygen gwenview ibus-qt4 icoutils jockey-kde k3b k3b-data kaccessible kaddressbook kamera kate kate-data katepart kcalc kde-baseapps-bin kde-baseapps-data kde-config-gtk kde-config-touchpad kde-runtime kde-runtime-data kde-wallpapers-default kde-window-manager kde-workspace kde-workspace-bin kde-workspace-data kde-workspace-kgreet-plugins kde-zeroconf kdebase-runtime kdegames-card-data kdegraphics-strigi-analyzer kdelibs-bin kdelibs5-data kdelibs5-plugins kdemultimedia-kio-plugins kdenetwork-filesharing kdepasswd kdepim-groupware kdepim-kresources kdepim-runtime kdepim-strigi-plugins kdepim-wizards kdepimlibs-kio-plugins kdesudo kdm kdoctools kfind khelpcenter4 kinfocenter klipper kmag kmail kmix kmousetool knotes konsole kontact kopete kopete-message-indicator korganizer kpat kppp ksnapshot ksysguard ksysguardd ksystemlog ktimetracker ktorrent ktorrent-data kubuntu-debug-installer kubuntu-default-settings kubuntu-desktop kubuntu-docs kubuntu-firefox-installer kubuntu-netbook-default-settings kubuntu-notification-helper kubuntu-web-shortcuts kvkbd kwalletmanager language-selector-kde libakonadi-calendar4 libakonadi-contact4 libakonadi-kabc4 libakonadi-kcal4 libakonadi-kde4 libakonadi-kmime4 libakonadiprotocolinternals1 libarchive1 libassuan0 libattica0 libaudio2 libbluedevil1 libboost-program-options1.46.1 libcalendarsupport4 libcanberra-pulse libcln6 libclucene0ldbl libdbusmenu-qt2 libdebconf-kde0 libdiscid0 libdlrestrictions1 libdmtx0a libepub0 libeventviews4 libflac++6 libgadu3 libgif4 libgpgme++2 libgpgme11 libgpod4-nogtk libgps19 libgrantlee-core0 libhyphen0 libibus-qt1 libincidenceeditorsng4 libindicate-qt1 libiodbc2 libk3b6 libkabc4 libkateinterfaces4 libkatepartinterfaces4 libkblog4 libkcal4 libkcalcore4 libkcalutils4 libkcddb4 libkcmutils4 libkde3support4 libkdecorations4 libkdecore5 libkdegames5a libkdepim4 libkdepimdbusinterfaces4 libkdesu5 libkdeui5 libkdewebkit5 libkdgantt2 libkdnssd4 libkemoticons4 libkephal4abi1 libkexiv2-10 libkexiv2-data libkfile4 libkholidays4 libkhtml5 libkidletime4 libkimap4 libkio5 libkipi-data libkipi8 libkjsapi4 libkjsembed4 libkldap4 libkleo4 libkmanagesieve4 libkmbox4 libkmediaplayer4 libkmime4 libknewstuff2-4 libknewstuff3-4 libknotifyconfig4 libkntlm4 libkonq-common libkonq5-templates libkonq5abi1 libkontactinterface4 libkopete4 libkparts4 libkpgp4 libkpimidentities4 libkpimtextedit4 libkpimutils4 libkprintutils4 libkpty4 libkresources4 libkrosscore4 libksba8 libkscreensaver5 libksgrd4 libksieve4 libksieveui4 libksignalplotter4 libktexteditor4 libktnef4 libktorrent-l10n libktorrent3 libkunitconversion4 libkwineffects1abi2 libkworkspace4 libkxmlrpcclient4 liblastfm0 libmailcommon4 libmailtransport4 libmessagecomposer4 libmessagecore4 libmessagelist4 libmessageviewer4 libmhash2 libmicroblog4 libmpcdec6 libmsn0.3 libmtp-common libmtp-runtime libmtp9 libmuonprivate1 libmusicbrainz3-6 libmysqlclient16 libmythes-1.2-0 libneon27-gnutls libnepomuk4 libnepomukquery4a libnepomukutils4 libntrack-qt4-1 libntrack0 libokularcore1 libphonon4 libplasma-geolocation-interface4 libplasma3 libplasmaclock4abi2 libplasmagenericshell4 libpolkit-qt-1-1 libpoppler-qt4-3 libprison0 libprocesscore4abi1 libprocessui4a libpth20 libqalculate5 libqapt-runtime libqapt1 libqca2 libqca2-plugin-ossl libqgpgme1 libqimageblitz4 libqjson0 libqrencode3 libqt4-dbus libqt4-declarative libqt4-designer libqt4-help libqt4-network libqt4-opengl libqt4-qt3support libqt4-script libqt4-scripttools libqt4-sql libqt4-sql-mysql libqt4-sql-sqlite libqt4-svg libqt4-test libqt4-xml libqt4-xmlpatterns libqtassistantclient4 libqtcore4 libqtglib-2.0-0 libqtgstreamer-0.10-0 libqtgui4 libqtscript4-core libqtscript4-gui libqtscript4-network libqtscript4-sql libqtscript4-uitools libqtscript4-xml libqtwebkit4 libraptor2-0 librasqal3 librdf0 libreoffice-base-core libreoffice-calc libreoffice-common libreoffice-core libreoffice-draw libreoffice-emailmerge libreoffice-impress libreoffice-kde libreoffice-math libreoffice-style-human libreoffice-style-oxygen libreoffice-writer libsolid4 libsolidcontrol4abi2 libsolidcontrolifaces4abi2 libsoprano4 libssh-4 libstlport4.6ldbl libstreamanalyzer0 libstreams0 libsyndication4 libtag-extras1 libtaskmanager4abi2 libtemplateparser4 libtextcat-data libtextcat0 libthreadweaver4 libvirtodbc0 libweather-ion6 libxml2-utils libyajl1 libzip1 muon muon-installer muon-notifier muon-updater mysql-client-core-5.1 mysql-common mysql-server-core-5.1 ntrack-module-libnl-0 obexd-client odbcinst odbcinst1debian2 okular okular-extra-backends oxygen-cursor-theme oxygen-icon-theme oxygen-icon-theme-complete partitionmanager phonon phonon-backend-gstreamer pinentry-gtk2 pinentry-qt4 plasma-dataengines-addons plasma-dataengines-workspace plasma-desktop plasma-netbook plasma-scriptengine-javascript plasma-scriptengine-python plasma-widget-facebook plasma-widget-folderview plasma-widget-kimpanel plasma-widget-kimpanel-backend-ibus plasma-widget-menubar plasma-widget-message-indicator plasma-widget-networkmanagement plasma-widgets-addons plasma-widgets-workspace plymouth-theme-kubuntu-logo plymouth-theme-kubuntu-text printer-applet pulseaudio-module-bluetooth python-kde4 python-pyudev python-qt4 python-qt4-dbus python-sip python-uno qapt-batch qapt-deb-installer qdbus quassel quassel-data rekonq shared-desktop-ontologies software-properties-kde soprano-daemon system-config-printer-kde systemsettings uno-libs3 update-manager-kde ure usb-creator-kde userconfig virtuoso-minimal virtuoso-opensource-6.1-bin virtuoso-opensource-6.1-common wodim xfonts-mathml