*** This bug is a duplicate of bug 1724439 ***
    https://bugs.launchpad.net/bugs/1724439

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 #1724439, 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.

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https://bugs.launchpad.net/bugs/1763759/+attachment/5114139/+files/Disassembly.txt

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** This bug has been marked a duplicate of bug 1724439
   gnome-shell crashed with SIGSEGV in meta_window_get_monitor() from 
ffi_call_unix64() from ffi_call() from gjs_invoke_c_function() from 
function_call()

** Information type changed from Private to Public

** Tags removed: need-amd64-retrace

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https://bugs.launchpad.net/bugs/1763759

Title:
  gnome-shell crashed with SIGSEGV in meta_window_get_monitor()

Status in gnome-shell package in Ubuntu:
  New

Bug description:
  Error happened when switching monitors in HDMI

  ProblemType: Crash
  DistroRelease: Ubuntu 18.04
  Package: gnome-shell 3.28.0-0ubuntu5
  ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
  Uname: Linux 4.15.0-13-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.20.9-0ubuntu4
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Apr 13 18:15:55 2018
  DisplayManager: gdm3
  ExecutablePath: /usr/bin/gnome-shell
  InstallationDate: Installed on 2018-04-05 (8 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Beta amd64 (20180403.1)
  ProcCmdline: /usr/bin/gnome-shell
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=uk_UA.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7fc814273c24 <meta_window_get_monitor+4>:    mov    
0x18(%rax),%eax
   PC (0x7fc814273c24) ok
   source "0x18(%rax)" (0x00000018) not located in a known VMA region (needed 
readable region)!
   destination "%eax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: gnome-shell
  StacktraceTop:
   meta_window_get_monitor () from /usr/lib/x86_64-linux-gnu/libmutter-2.so.0
   ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
   ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
   ?? () from /usr/lib/libgjs.so.0
   ?? () from /usr/lib/libgjs.so.0
  Title: gnome-shell crashed with SIGSEGV in meta_window_get_monitor()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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