*** This bug is a duplicate of bug 1703668 ***
    https://bugs.launchpad.net/bugs/1703668

** This bug has been marked a duplicate of bug 1703668
   gnome-shell crashed with SIGSEGV in meta_monitor_get_main_output() from 
meta_monitor_get_vendor() from meta_input_settings_find_logical_monitor()

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https://bugs.launchpad.net/bugs/1761131

Title:
  gnome-shell crashed with SIGSEGV in meta_monitor_get_main_output()
  from meta_monitor_get_vendor() from logical_monitor_find_monitor()
  from meta_input_settings_find_monitor() from update_device_display()

Status in gnome-shell package in Ubuntu:
  Confirmed

Bug description:
  https://errors.ubuntu.com/problem/dd87180eee24f496777a479c52715703596eb268

  ---

  happened on screensaver activation

  ProblemType: Crash
  DistroRelease: Ubuntu 18.04
  Package: gnome-shell 3.28.0-0ubuntu2
  ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
  Uname: Linux 4.15.0-13-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.9-0ubuntu2
  Architecture: amd64
  CrashCounter: 1
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Apr  4 11:13:09 2018
  DisplayManager: gdm3
  ExecutablePath: /usr/bin/gnome-shell
  GsettingsChanges:
   b'org.gnome.shell' b'enabled-extensions' b"['keepaw...@jepfa.de']"
   b'org.gnome.shell' b'app-picker-view' b'uint32 1'
   b'org.gnome.shell' b'favorite-apps' b"['org.gnome.Software.desktop', 
'org.gnome.Nautilus.desktop', 'google-chrome.desktop', 'firefox.desktop', 
'org.gnome.Terminal.desktop', 'jetbrains-phpstorm.desktop', 
'skypeforlinux.desktop', 'gnome-control-center.desktop', 
'org.gnome.gedit.desktop', 'dbeaver.desktop']"
   b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
  InstallationDate: Installed on 2018-03-13 (21 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180311)
  ProcCmdline: /usr/bin/gnome-shell
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7fecaee5fe53 <meta_monitor_get_main_output+3>:       
jmpq   *0x88(%rax)
   PC (0x7fecaee5fe53) ok
   source "*0x88(%rax)" ok
   SP (0x7ffd4e598cd8) ok
   Reason could not be automatically determined.
  Signal: 11
  SourcePackage: gnome-shell
  StacktraceTop:
   meta_monitor_get_main_output () from 
/usr/lib/x86_64-linux-gnu/libmutter-2.so.0
   meta_monitor_get_vendor () from /usr/lib/x86_64-linux-gnu/libmutter-2.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libmutter-2.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libmutter-2.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libmutter-2.so.0
  Title: gnome-shell crashed with SIGSEGV in meta_monitor_get_main_output()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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