Public bug reported:

How I was able to recreate the crash multiple times:

1. Login
2. Open terminal, run sudo nautilus
--> I get this error :

Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect:
Connection refused

(nautilus:4129): Gtk-WARNING **: cannot open display: :0

3. Run su, login and run nautilus
4. Navigate to /opt/<some app folder>
5. Open a file and close it
6. Copy that file to my non root desktop (/home/hiruna/Desktop in my case)
7. Open the file normally from the non root user
--> Immediate freeze

ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: gnome-shell 3.26.1-0ubuntu5
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Oct 27 12:32:17 2017
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
InstallationDate: Installed on 2017-05-24 (155 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
 LANGUAGE=en_AU:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
Signal: 5
SourcePackage: gnome-shell
StacktraceTop:
 __GI___poll (fds=0x55811f323800, nfds=16, timeout=2771) at 
../sysdeps/unix/sysv/linux/poll.c:29
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 meta_run () from /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
 ?? ()
Title: gnome-shell crashed with signal 5 in __GI___poll()
UpgradeStatus: Upgraded to artful on 2017-10-19 (7 days ago)
UserGroups: adm cdrom dialout dip input lpadmin plugdev sambashare sudo video

** Affects: gnome-shell (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-crash artful need-amd64-retrace package-from-proposed 
third-party-packages wayland-session

** Information type changed from Private to Public

-- 
You received this bug notification because you are a member of Desktop
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https://bugs.launchpad.net/bugs/1727902

Title:
  gnome-shell crashed with signal 5 in __GI___poll()

Status in gnome-shell package in Ubuntu:
  New

Bug description:
  How I was able to recreate the crash multiple times:

  1. Login
  2. Open terminal, run sudo nautilus
  --> I get this error :

  Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not
  connect: Connection refused

  (nautilus:4129): Gtk-WARNING **: cannot open display: :0

  3. Run su, login and run nautilus
  4. Navigate to /opt/<some app folder>
  5. Open a file and close it
  6. Copy that file to my non root desktop (/home/hiruna/Desktop in my case)
  7. Open the file normally from the non root user
  --> Immediate freeze

  ProblemType: Crash
  DistroRelease: Ubuntu 17.10
  Package: gnome-shell 3.26.1-0ubuntu5
  ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
  Uname: Linux 4.13.0-16-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Oct 27 12:32:17 2017
  DisplayManager: gdm3
  ExecutablePath: /usr/bin/gnome-shell
  InstallationDate: Installed on 2017-05-24 (155 days ago)
  InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
  ProcCmdline: /usr/bin/gnome-shell
  ProcEnviron:
   LANGUAGE=en_AU:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_AU.UTF-8
   SHELL=/bin/bash
  Signal: 5
  SourcePackage: gnome-shell
  StacktraceTop:
   __GI___poll (fds=0x55811f323800, nfds=16, timeout=2771) at 
../sysdeps/unix/sysv/linux/poll.c:29
   ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   meta_run () from /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
   ?? ()
  Title: gnome-shell crashed with signal 5 in __GI___poll()
  UpgradeStatus: Upgraded to artful on 2017-10-19 (7 days ago)
  UserGroups: adm cdrom dialout dip input lpadmin plugdev sambashare sudo video

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