Purging and install Unity make desktop unusable

[asu]

$ uname -a
Linux 192-168-0-3 3.19.0-16-generic #16-Ubuntu SMP Thu Apr 30 16:13:00 UTC 2015 i686 i686 i686 GNU/Linux

$ dpkg -s unity
Package: unity
Status: install ok installed
Priority: optional
Section: gnome
Installed-Size: 6736
Maintainer: Ubuntu Developers <email address hidden>
Architecture: i386
Version: 7.3.2+15.04.20150420-0ubuntu1
Provides: indicator-renderer
Depends: compiz-core, libatk-bridge2.0-0 (>= 2.5.3), libatk1.0-0 (>= 2.2.0), libbamf3-2 (>= 0.5.0), libc6 (>= 2.17), libcairo2 (>= 1.14.0), libdbusmenu-glib4 (>= 0.4.2), libdee-1.0-4 (>= 0.5.2), libgcc1 (>= 1:4.1.1), libgdk-pixbuf2.0-0 (>= 2.22.0), libgl1-mesa-glx | libgl1, libglew1.10 (>= 1.10.0), libglib2.0-0 (>= 2.41.1), libgnome-desktop-3-10 (>= 3.11.90), libgtk-3-0 (>= 3.11.5), libindicator3-7 (>= 0.4.90), libjson-glib-1.0-0 (>= 0.12.0), libnotify4 (>= 0.7.0), libnux-4.0-0, libpam0g (>= 0.99.7.1), libpango-1.0-0 (>= 1.22.0), libpangocairo-1.0-0 (>= 1.14.0), libsigc++-2.0-0c2a (>= 2.2.0), libstdc++6 (>= 4.9), libunity-core-6.0-9 (= 7.3.2+15.04.20150420-0ubuntu1), libunity-misc4 (>= 4.0.2), libunity-protocol-private0 (>= 7.1.4+14.10.20140808), libx11-6 (>= 2:1.2.99.901), libxext6, libxfixes3 (>= 1:5.0.1-1), libxi6 (>= 2:1.7.1.901), libxrender1, libzeitgeist-2.0-0 (>= 0.9.9), session-migration, python:any, compiz, compiz-core-abiversion-20140123, libnux-abiversion-20140307.0, compiz-plugins-default, libglib2.0-bin, nux-tools, python3-gi, dconf-cli, unity-asset-pool (>= 0.8.18), unity-greeter, bamfdaemon, unity-scope-home
Recommends: unity-control-center, unity-scope-virtualbox, unity-scope-chromiumbookmarks, unity-lens-applications, unity-scope-zotero, unity-scope-clementine, unity-lens-files, unity-scope-devhelp, unity-scope-colourlovers, unity-scope-gourmet, unity-scope-firefoxbookmarks, unity-scope-audacious, unity-scope-texdoc, unity-scope-video-remote, unity-scope-manpages, unity-scope-tomboy, unity-scope-guayadeque, unity-scope-musicstores, unity-lens-music, unity-scope-yelp, unity-scope-calculator, unity-lens-photos, unity-scope-openclipart, unity-scope-musique, unity-scope-gmusicbrowser, unity-scope-gdrive, unity-lens-video, indicator-appmenu (>= 15.02.0), indicator-application, indicator-sound, indicator-bluetooth, indicator-datetime, indicator-keyboard, indicator-messages, indicator-printers, indicator-power, indicator-session, telepathy-indicator, hud
Breaks: unity-lens-applications (<< 5.12.0-0ubuntu2), unity-lens-files (<< 5.10.0-0ubuntu2), unity-lens-music (<< 6.0.0), unity-lens-video (<< 0.3.6-0ubuntu2)
Conffiles:
 /etc/pam.d/unity 6db13401571f575bd03b96a501817be7
Description: Interface designed for efficiency of space and interaction.
 Unity is a desktop experience that sings. Designed by Canonical and the Ayatana
 community, Unity is all about the combination of familiarity and the future. We
 bring together visual design, analysis of user experience testing, modern
 graphics technologies and a deep understanding of the free software landscape
 to produce what we hope will be the lightest, most elegant and most delightful
 way to use your PC.
Homepage: https://launchpad.net/unity

How reproduce this bug:
Switch to VT1 (Press Ctrl+Alt+F12 and Alt+F1), run from terminal "sudo systemctl stop lightdm" and purge unity "sudo apt-get purge unity.
Starting again lightdm "sudo systemctl start lighdm" and display manager appear ,enter on account , only desktop baground and expected to bee.
Again switch to VT1 stop lightdm install unity (sudo apt-get install unity) and start lightdm service, enter on account but i expected to start unity ,but not.

To solve temporary this issue must enter on VT1, stopping lighdm service and remove all content on hidden directory from $HOME/.config,
starting lightdm and enter on unity normal.

[Andrea Azzarone (azzar1)]

Can you still reproduce this?

[Launchpad Janitor (janitor)]

[Expired for unity (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for Unity because there has been no activity for 60 days.]