Mach einfach:
sudo apt install unity
sudo apt install unity
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
activity-log-manager appmenu-qt bamfdaemon compiz compiz-core compiz-gnome compiz-plugins-default geoclue geoclue-ubuntu-geoip gir1.2-accounts-1.0 gir1.2-signon-1.0 gnome-power-manager
gnome-screensaver gsettings-ubuntu-schemas hud indicator-application indicator-appmenu indicator-bluetooth indicator-common indicator-datetime indicator-keyboard indicator-messages
indicator-power indicator-printers indicator-session indicator-sound jayatana libaccounts-glib0 libbamf3-2 libcolumbus1-common libcolumbus1v5 libcompizconfig0 libdbusmenu-qt2
libdecoration0 libfcitx-config4 libfcitx-gclient0 libfcitx-utils0 libframe6 libgeis1 libgeoclue0 libgeonames-common libgeonames0 libglewmx1.13 libgrail6 libgsettings-qt1 libido3-0.1-0
liblightdm-gobject-1-0 libmessaging-menu0 libmetacity1 libnux-4.0-0 libnux-4.0-common libqt5sql5 libqt5sql5-sqlite libsignon-glib1 libtimezonemap-data libtimezonemap1
libunity-control-center1 libunity-core-6.0-9 libunity-gtk2-parser0 libunity-gtk3-parser0 libunity-misc4 libunity-settings-daemon1 liburl-dispatcher1 libzeitgeist-1.0-1 metacity-common
nux-tools python3-blinker python3-bs4 python3-feedparser python3-html5lib python3-jwt python3-lxml python3-oauthlib python3-webencodings rhythmbox-plugin-zeitgeist session-migration
session-shortcuts sgml-base shotwell shotwell-common system-config-printer thunderbird-gnome-support ubuntu-touch-sounds unity-asset-pool unity-control-center unity-greeter
unity-gtk-module-common unity-gtk2-module unity-gtk3-module unity-lens-applications unity-lens-files unity-lens-music unity-lens-photos unity-lens-video unity-schemas
unity-scope-calculator unity-scope-chromiumbookmarks unity-scope-colourlovers unity-scope-devhelp unity-scope-firefoxbookmarks unity-scope-home unity-scope-manpages
unity-scope-openclipart unity-scope-texdoc unity-scope-tomboy unity-scope-video-remote unity-scope-virtualbox unity-scope-yelp unity-scope-zotero unity-scopes-master-default
unity-scopes-runner unity-services unity-session unity-settings-daemon zeitgeist-datahub
Suggested packages:
lightdm unity-greeter-session-broadcast fcitx url-dispatcher python-blinker-doc python3-genshi python3-lxml-dbg python-lxml-doc sgml-base-doc python3-smbc lightdm-remote-session-freerdp
lightdm-remote-session-uccsconfigure remote-login-service tomboy
Recommended packages:
systemd-services
The following NEW packages will be installed:
activity-log-manager appmenu-qt bamfdaemon compiz compiz-core compiz-gnome compiz-plugins-default geoclue geoclue-ubuntu-geoip gir1.2-accounts-1.0 gir1.2-signon-1.0 gnome-power-manager
gnome-screensaver gsettings-ubuntu-schemas hud indicator-application indicator-appmenu indicator-bluetooth indicator-common indicator-datetime indicator-keyboard indicator-messages
indicator-power indicator-printers indicator-session indicator-sound jayatana libaccounts-glib0 libbamf3-2 libcolumbus1-common libcolumbus1v5 libcompizconfig0 libdbusmenu-qt2
libdecoration0 libfcitx-config4 libfcitx-gclient0 libfcitx-utils0 libframe6 libgeis1 libgeoclue0 libgeonames-common libgeonames0 libglewmx1.13 libgrail6 libgsettings-qt1 libido3-0.1-0
liblightdm-gobject-1-0 libmessaging-menu0 libmetacity1 libnux-4.0-0 libnux-4.0-common libqt5sql5 libqt5sql5-sqlite libsignon-glib1 libtimezonemap-data libtimezonemap1
libunity-control-center1 libunity-core-6.0-9 libunity-gtk2-parser0 libunity-gtk3-parser0 libunity-misc4 libunity-settings-daemon1 liburl-dispatcher1 libzeitgeist-1.0-1 metacity-common
nux-tools python3-blinker python3-bs4 python3-feedparser python3-html5lib python3-jwt python3-lxml python3-oauthlib python3-webencodings rhythmbox-plugin-zeitgeist session-migration
session-shortcuts sgml-base shotwell shotwell-common system-config-printer thunderbird-gnome-support ubuntu-touch-sounds unity unity-asset-pool unity-control-center unity-greeter
unity-gtk-module-common unity-gtk2-module unity-gtk3-module unity-lens-applications unity-lens-files unity-lens-music unity-lens-photos unity-lens-video unity-schemas
unity-scope-calculator unity-scope-chromiumbookmarks unity-scope-colourlovers unity-scope-devhelp unity-scope-firefoxbookmarks unity-scope-home unity-scope-manpages
unity-scope-openclipart unity-scope-texdoc unity-scope-tomboy unity-scope-video-remote unity-scope-virtualbox unity-scope-yelp unity-scope-zotero unity-scopes-master-default
unity-scopes-runner unity-services unity-session unity-settings-daemon zeitgeist-datahub
0 upgraded, 116 newly installed, 0 to remove and 0 not upgraded.
Need to get 29,3 MB of archives.
After this operation, 87,8 MB of additional disk space will be used.
Danach müssen Sie sich abmelden und wieder anmelden und eine Desktop-Umgebung auswählen (das kleine Zahnrad neben der Anmeldeschaltfläche).