Well i didnt think of that, so I tried it, too. When I turn off my Display that is connected via Displayport, the Gnomeshell is killed after turning the Screen on again. After turning on the Screen the login-window can be seen. When you log in, its a new Session. That would explain why in Bug #1718671 the session is only crashing after when you want to unlock the Screen, because the Display was turned off after locking the screen.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1714886 Title: gnome-shell crashed with SIGSEGV in meta_window_is_on_primary_monitor() Status in gnome-shell package in Ubuntu: Confirmed Bug description: This crash appears after login in, when gnome-shell restarts it seems to be stable. ProblemType: Crash DistroRelease: Ubuntu 17.10 Package: gnome-shell 3.25.91-0ubuntu2 ProcVersionSignature: Ubuntu 4.12.0-12.13-generic 4.12.8 Uname: Linux 4.12.0-12-generic x86_64 ApportVersion: 2.20.7-0ubuntu1 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Sep 4 09:18:43 2017 DisplayManager: gdm3 EcryptfsInUse: Yes ExecutablePath: /usr/bin/gnome-shell InstallationDate: Installed on 2017-04-03 (153 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2) ProcCmdline: /usr/bin/gnome-shell SegvAnalysis: Segfault happened at: 0x7ff4e23f8b24 <meta_window_is_on_primary_monitor+4>: mov 0x2c(%rax),%eax PC (0x7ff4e23f8b24) ok source "0x2c(%rax)" (0x0000002c) 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_is_on_primary_monitor () from /usr/lib/x86_64-linux-gnu/libmutter-1.so.0 ?? () from /usr/lib/x86_64-linux-gnu/libmutter-1.so.0 meta_window_on_all_workspaces_changed () from /usr/lib/x86_64-linux-gnu/libmutter-1.so.0 meta_window_update_monitor () from /usr/lib/x86_64-linux-gnu/libmutter-1.so.0 g_slist_foreach () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 Title: gnome-shell crashed with SIGSEGV in meta_window_is_on_primary_monitor() UpgradeStatus: Upgraded to artful on 2017-08-31 (3 days ago) UserGroups: adm cdrom dip libvirt lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1714886/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp