I don't believe this is a duplicate of LP: #1288241 as I don't have apparmor-notify installed yet I have this bogus behaviour on resume.
Here are some debug info based on https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1288241/comments/13: $ ps auxww|grep [g]nome-screensaver simon 4926 0.0 0.3 510560 24080 ? Sl 08:35 0:02 /usr/bin/gnome-screensaver --no-daemon simon 5572 0.0 0.1 473948 15480 ? Sl 08:40 0:00 /usr/bin/gnome-screensaver --no-daemon $ cat /proc/4926/environ | tr '\0' '\n'|grep UPSTART_SESSION UPSTART_SESSION=unix:abstract=/com/ubuntu/upstart-session/1000/4683 $ cat /proc/5572/environ | tr '\0' '\n'|grep UPSTART_SESSION # nothing showed in that grep $ cat /proc/4926/environ | tr '\0' '\n'|grep DBUS_SESSION DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-FhuyEq4d9X,guid=c156604da8fe0782de11a61a53341afe $ cat /proc/5572/environ | tr '\0' '\n'|grep DBUS_SESSION DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-C3BaSOeR1G,guid=d2a6b4f0d7acab4bcd28b4a953341c22 $ cat /etc/X11/Xsession.d/90apparmor-notify cat: /etc/X11/Xsession.d/90apparmor-notify: No such file or directory $ dpkg -l| grep apparmor ii apparmor 2.8.95~2430-0ubuntu2 amd64 User-space parser utility for AppArmor ii libapparmor-perl 2.8.95~2430-0ubuntu2 amd64 AppArmor library Perl bindings ii libapparmor1:amd64 2.8.95~2430-0ubuntu2 amd64 changehat AppArmor library ** This bug is no longer a duplicate of bug 1288241 gnome-screensaver is running twice and prompts twice to unlock -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1295673 Title: Two lock screens. Ubuntu and Gnome - parallel. Why? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1295673/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs