This is not properly a bug but rather an unimplemented feature, as explained in the upstream gnome bug #528812. The code to execute the scripts at logout has been submitted to that bug by someone but nobody is finishing it up.
That's the status, no point adding entries in /etc/gdm/PostSession/Default, because nothing will read it, or hoping for a bugfix; someone has to implement the feature. -- Logout/Shutdown Sound Not Working https://bugs.launchpad.net/bugs/214370 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs