You have been subscribed to a public bug: We have had reports going back to 13.10 that gnome-shell extensions are disabled after restart (LP: #1236749), I've only just managed to reproduce this and have discovered that gnome-session is not shutting down cleanly.
Basically, X gets shutdown, which causes gnome-shell to abort, following this gnome-session tries to respawn gnome-shell which fails and due to this failure disables all shell extensions. I don't know enough about upstart to really understand what is going on but it appears this also affects unity and it just hasnt been noticed since there are probably no such side-effects happening there. Filing this against upstart since this is not reproducible when using systemd init, though it may well be a bug in gnome-session, but related to upstart user sessions. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: upstart 1.13.2-0ubuntu2 ProcVersionSignature: Ubuntu 3.16.0-22.29-generic 3.16.4 Uname: Linux 3.16.0-22-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.14.7-0ubuntu8 Architecture: amd64 CurrentDesktop: GNOME Date: Sat Oct 25 14:05:24 2014 InstallationDate: Installed on 2012-09-23 (762 days ago) InstallationMedia: Ubuntu GNOME Remix 12.10 "Quantal Quetzal" - Alpha amd64(20120922) SourcePackage: upstart UpgradeStatus: No upgrade log present (probably fresh install) UpstartBugCategory: Session UpstartRunningSessionCount: 1 UpstartRunningSessionVersion: upstart 1.13.2 UpstartRunningSystemVersion: init (upstart 1.13.2) ** Affects: ubuntu-gnome Importance: Undecided Status: New ** Affects: gnome-session (Ubuntu) Importance: Low Status: Confirmed ** Tags: amd64 apport-bug third-party-packages vivid -- gnome-session not shutting down cleanly https://bugs.launchpad.net/bugs/1385572 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-session in Ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs