gnome-screensaver crashed with SIGSEGV in XGetScreenSaver()

[Xavier]

computer was just idle and crash !

ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: gnome-screensaver 3.6.1-7ubuntu6
ProcVersionSignature: Ubuntu 4.13.0-11.12-generic 4.13.1
Uname: Linux 4.13.0-11-generic x86_64
ApportVersion: 2.20.7-0ubuntu1
Architecture: amd64
CurrentDesktop: GNOME
Date: Fri Sep 22 12:53:05 2017
ExecutablePath: /usr/bin/gnome-screensaver
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
GsettingsGnomeSession:
 org.gnome.desktop.session session-name 'ubuntu'
 org.gnome.desktop.session idle-delay uint32 600
InstallationDate: Installed on 2012-11-20 (1766 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
ProcCmdline: /usr/bin/gnome-screensaver --no-daemon
Signal: 11
SourcePackage: gnome-screensaver
StacktraceTop:
 XGetScreenSaver () at /usr/lib/x86_64-linux-gnu/libX11.so.6
 ()
 () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
 () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: gnome-screensaver crashed with SIGSEGV in XGetScreenSaver()
UpgradeStatus: Upgraded to artful on 2017-09-22 (0 days ago)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1701843, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.