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

** Description changed:

  Artful (17.10) Session logout after screen turned off
  
- Whenever I turn off my screen, the computer (a desktop PC) logs me out
- of my session.
+ Whenever I turn off my screen and then turn it on the problem occurs. the 
computer (a desktop PC) logs me out of my session.
+ When I wake the screen, I get the GDM login screen and a new session opens.
+ The previous session is lost.
  
  ProblemType: Crash
  DistroRelease: Ubuntu 17.10
  Package: gnome-shell 3.26.2-0ubuntu0.1
  ProcVersionSignature: Ubuntu 4.13.0-25.29-generic 4.13.13
  Uname: Linux 4.13.0-21-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.7
  Architecture: amd64
  CrashCounter: 1
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Jan  9 18:08:20 2018
  DisplayManager: gdm3
  ExecutablePath: /usr/bin/gnome-shell
  ExecutableTimestamp: 1510175942
  GsettingsChanges:
-  b'org.gnome.shell' b'enabled-extensions' 
b"['gnome-shell-screens...@ttll.de']"
-  b'org.gnome.shell' b'favorite-apps' b"['google-chrome.desktop', 
'firefox.desktop', 'org.gnome.gedit.desktop', 'rhythmbox.desktop', 
'org.gnome.Nautilus.desktop', 'update-manager.desktop', 
'org.gnome.Software.desktop', 'org.gnome.Terminal.desktop', 
'plexmediamanager.desktop', 'gnome-system-monitor.desktop', 
'transmission-gtk.desktop']"
-  b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
-  b'org.gnome.desktop.interface' b'icon-theme' b"'Numix-Square'"
-  b'org.gnome.desktop.interface' b'gtk-theme' b"'Arc-Darker'"
+  b'org.gnome.shell' b'enabled-extensions' 
b"['gnome-shell-screens...@ttll.de']"
+  b'org.gnome.shell' b'favorite-apps' b"['google-chrome.desktop', 
'firefox.desktop', 'org.gnome.gedit.desktop', 'rhythmbox.desktop', 
'org.gnome.Nautilus.desktop', 'update-manager.desktop', 
'org.gnome.Software.desktop', 'org.gnome.Terminal.desktop', 
'plexmediamanager.desktop', 'gnome-system-monitor.desktop', 
'transmission-gtk.desktop']"
+  b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
+  b'org.gnome.desktop.interface' b'icon-theme' b"'Numix-Square'"
+  b'org.gnome.desktop.interface' b'gtk-theme' b"'Arc-Darker'"
  InstallationDate: Installed on 2017-12-03 (37 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  ProcCmdline: /usr/bin/gnome-shell
  ProcCwd: /home/tux
  ProcEnviron:
-  LANGUAGE=pt_BR:pt:en
-  PATH=(custom, no user)
-  XDG_RUNTIME_DIR=<set>
-  LANG=pt_BR.UTF-8
-  SHELL=/bin/bash
+  LANGUAGE=pt_BR:pt:en
+  PATH=(custom, no user)
+  XDG_RUNTIME_DIR=<set>
+  LANG=pt_BR.UTF-8
+  SHELL=/bin/bash
  SegvAnalysis:
-  Segfault happened at: 0x7f97ba3992d4 <meta_window_get_monitor+4>:    mov    
0x18(%rax),%eax
-  PC (0x7f97ba3992d4) ok
-  source "0x18(%rax)" (0x00000018) not located in a known VMA region (needed 
readable region)!
-  destination "%eax" ok
+  Segfault happened at: 0x7f97ba3992d4 <meta_window_get_monitor+4>:    mov    
0x18(%rax),%eax
+  PC (0x7f97ba3992d4) 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-1.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
+  meta_window_get_monitor () from /usr/lib/x86_64-linux-gnu/libmutter-1.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

-- 
You received this bug notification because you are a member of Desktop
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https://bugs.launchpad.net/bugs/1742540

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

Status in gnome-shell package in Ubuntu:
  New

Bug description:
  Artful (17.10) Session logout after screen turned off

  Whenever I turn off my screen and then turn it on the problem occurs. the 
computer (a desktop PC) logs me out of my session.
  When I wake the screen, I get the GDM login screen and a new session opens.
  The previous session is lost.

  ProblemType: Crash
  DistroRelease: Ubuntu 17.10
  Package: gnome-shell 3.26.2-0ubuntu0.1
  ProcVersionSignature: Ubuntu 4.13.0-25.29-generic 4.13.13
  Uname: Linux 4.13.0-21-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.7
  Architecture: amd64
  CrashCounter: 1
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Jan  9 18:08:20 2018
  DisplayManager: gdm3
  ExecutablePath: /usr/bin/gnome-shell
  ExecutableTimestamp: 1510175942
  GsettingsChanges:
   b'org.gnome.shell' b'enabled-extensions' 
b"['gnome-shell-screens...@ttll.de']"
   b'org.gnome.shell' b'favorite-apps' b"['google-chrome.desktop', 
'firefox.desktop', 'org.gnome.gedit.desktop', 'rhythmbox.desktop', 
'org.gnome.Nautilus.desktop', 'update-manager.desktop', 
'org.gnome.Software.desktop', 'org.gnome.Terminal.desktop', 
'plexmediamanager.desktop', 'gnome-system-monitor.desktop', 
'transmission-gtk.desktop']"
   b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
   b'org.gnome.desktop.interface' b'icon-theme' b"'Numix-Square'"
   b'org.gnome.desktop.interface' b'gtk-theme' b"'Arc-Darker'"
  InstallationDate: Installed on 2017-12-03 (37 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  ProcCmdline: /usr/bin/gnome-shell
  ProcCwd: /home/tux
  ProcEnviron:
   LANGUAGE=pt_BR:pt:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=pt_BR.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7f97ba3992d4 <meta_window_get_monitor+4>:    mov    
0x18(%rax),%eax
   PC (0x7f97ba3992d4) 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-1.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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