After running an update on Monday, on a Kubuntu 12.04 box, I've lost the option to select KDE in the login screen (there was a message that read approximately "option kde* has been removed"). Only "Default" and "Failsafe" remained. Using "Default" resulted in a black screen with only the KDE-style mouse cursor visible, using "Failsafe" brought me back to the login screen.
In the meantime, I've installed unity (and
gdm along with it). I then attempted
sudo dpkg --reconfigure kdm
but that only brought back the KDE login screen (with additional GNOME/Unity session options). It looks like either some KDE package got uninstalled, or some configuration has been corrupted. Regarding the former:
$ dpkg --get-selections | grep kde apport-kde install apturl-kde install firefox-kde-support install gdebi-kde install jockey-kde install kde-baseapps-bin install kde-baseapps-data install kde-config-gtk install kde-config-touchpad install kde-runtime install kde-runtime-data install kde-style-oxygen install kde-wallpapers-default install kde-window-manager install kde-window-manager-common install kde-workspace-bin deinstall kde-workspace-data install kde-workspace-kgreet-plugins install kde-zeroconf install kdebase-bin install kdebase-runtime install kdebase-runtime-data deinstall kdebase-workspace-bin deinstall kdebase-workspace-data deinstall kdegames-card-data install kdegraphics-libs-data install kdegraphics-mobipocket install kdegraphics-strigi-analyzer install kdegraphics-strigi-plugins install kdegraphics-thumbnailers install kdelibs-bin install kdelibs5-data install kdelibs5-plugins install kdemultimedia-kio-plugins install kdenetwork-filesharing install kdepasswd install kdepim-groupware deinstall kdepim-kresources install kdepim-runtime install kdepim-strigi-plugins install kdepimlibs-kio-plugins install kdesudo install kdewallpapers install language-pack-kde-en install language-pack-kde-en-base install language-selector-kde install libakonadi-kde4 install libdebconf-kde0 install libkde3support4 install libkdeclarative5 install libkdecorations4 install libkdecore5 install libkdegames5 deinstall libkdegames5a install libkdepim4 install libkdepimdbusinterfaces4 install libkdesu5 install libkdeui5 install libkdewebkit5 install libreoffice-kde install polkit-kde-1 install python-kde4 install software-properties-kde install system-config-printer-kde install update-manager-kde install usb-creator-kde install xsettings-kde install
I think some packages may be missing, but I'm not sure, and I don't want to experiment in fear of losing my KDE-specific configuration and/or making things worse.
In that vein: How can I restore the KDE option on login without losing my configuration?