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[Launchpad Bug Tracker <1385572@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package gnome-session - 3.9.90-0ubuntu16.1

---------------
gnome-session (3.9.90-0ubuntu16.1) utopic; urgency=medium

  [ Tim Lunn ]
  * debian/patches/103_kill_the_fail_whale.patch: fix logic gnome-session
    should die at this point. This will fix LP: #1236749,
    LP: #1385572 and possibly various other strange bugs

  [ Ryan Tandy ]
  * debian/patches/git_add_disable_acceleration_option.patch: Backport
    upstream patch to add a --disable-acceleration-check command-line option.
    (LP: #1251281)
  * debian/gnome-session-bin.user-session.upstart: Disable acceleration check
    when launching a GNOME Flashback (Metacity) session.
 -- Dmitry Shachnev <mitya57@xxxxxxxxxx>   Sat, 21 Mar 2015 15:49:36 +0300

** Changed in: gnome-session (Ubuntu Utopic)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1385572

Title:
  gnome-session not shutting down cleanly

Status in Ubuntu GNOME:
  Triaged
Status in gnome-session package in Ubuntu:
  Fix Released
Status in gnome-session source package in Trusty:
  Fix Released
Status in gnome-session source package in Utopic:
  Fix Released
Status in gnome-session source package in Vivid:
  Fix Released

Bug description:
  [Impact]
  We have had reports going back to 13.10 that gnome-shell extensions are disabled after restart (LP: #1236749), this has probably been our #1 unresolved bug for the last few cycles. While this is the main user visible bug probably other bugs caused by this for example (BGO: #745707)

  The cause was tracked down to gnome-session not shutting down cleanly
  under upstart. Although the underlying issue seems to be the order in
  which upstart takes down the various components in a user session, the
  side-effects themselves appear to be caused by gnome-session
  continuing to run when it should in fact be shutdown

  The fix updates the 103_kill_the_fail_whale.patch to force shutdown of
  gnome-session. This is inline with the fix upstream for (BGO: #745707)
  also.

  [ Test Case ]
  Note: This is only reproducible under upstart init.
  1. Load gdm
  2. Login to gnome-shell using GNOME from the session list
  3. enable some extensions
  4. reboot system from user menu.
  5. login again to find extensions disabled.

  [ Regression Potential ]
  Very low, the fail whale is meant to be fatal. The upstream dialog that is disabled in ubuntu does in fact cause gnome-session to get shutdown.

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