This bug was fixed in the package lightdm - 1.20.0-0ubuntu3
---------------
lightdm (1.20.0-0ubuntu3) zesty; urgency=medium
* Add debian/patches/terminate-session.patch: Terminate leftover processes
in greeter session. It can happen that the greeter session does not
properly clean up itself on logout. This causes leaked processes like
settings-daemon which act on the user session as they share the same
$DISPLAY. Ask logind to terminate remaining processes in the greeter
session on closing, which is more robust than trying to fix every greeter.
(LP: #1637758)
-- Martin Pitt <martin.p...@ubuntu.com> Tue, 22 Nov 2016 09:43:39
+0100
** Changed in: lightdm (Ubuntu)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1637758
Title:
lightdm greeter session not properly shut down at login
Status in lightdm package in Ubuntu:
Fix Released
Bug description:
I am using lightdm with 2 seats. After 2409 revision randomly one of
two seats does not work correctly.
xsettings plugin from unity-settings-daemon or gnome-settings-deamon
fails to start because there is already _XSESSION_S* manager running.
After revision 2409 in system monitor I see that there is still
running unity-settings-daemon started by lightdm. Reverting this
revision fixes my problem.
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