After some trials and errors, I found the culprit. The is only ONE package missing to open the session normally :
gsettings-ubuntu-schemas So the conclusion is : if it is needed to properly open an X session then it SHOULD be a true dependency from another package, not just a recommended package. Currently in artful gsettings-ubuntu-schemas is a dependency of the following packages: $ apt-cache rdepends gsettings-ubuntu-schemas gsettings-ubuntu-schemas Reverse Depends: unity unity-settings-daemon unity-control-center indicator-sound indicator-datetime gsettings-ubuntu-touch-schemas ubuntu-desktop In this list no package is installed except ubuntu-desktop, and it is the only package in this list that set gsettings-ubuntu-schemas as a recommended packages. So TMHO, gsettings-ubuntu-schemas SHOULD BE -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/1712798 Title: login return to login screen if APT::Install-Recommends=false To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1712798/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
