Sounds like bug 1721577 or bug 1724557. Someone please review those in detail because all three Launchpad bugs are pointing to the same upstream bug. Three in Launchpad sounds like too many.
** Also affects: gnome-shell via https://bugzilla.gnome.org/show_bug.cgi?id=788764 Importance: Unknown Status: Unknown ** Changed in: gnome-shell (Ubuntu) Status: Confirmed => Incomplete -- 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/1734044 Title: gnome-shell crashes when monitor turned off or switch kvm Status in GNOME Shell: Unknown Status in gnome-shell package in Ubuntu: Incomplete Bug description: Gnome shell will crash every time when I turn off monitor or switch the kvm to my other system. Following message was captured in my journalctl log previously: Nov 10 17:34:31 ubox gnome-shell[1235]: meta_monitor_manager_get_logical_monitor_from_number: assertion '(unsigned int) number < g_list_length (manager->logical_monitors)' failed Nov 10 17:34:31 ubox gnome-shell[1235]: meta_workspace_get_work_area_for_monitor: assertion 'logical_monitor != NULL' failed ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: gnome-shell 3.26.1-0ubuntu5 ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8 Uname: Linux 4.13.0-17-generic x86_64 ApportVersion: 2.20.7-0ubuntu3.5 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Wed Nov 22 23:10:24 2017 DisplayManager: gdm3 InstallationDate: Installed on 2017-10-27 (27 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+bug/1734044/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

