While I can reproduce the bug for 100%, only one file is present in /var/crash, and it was an old night crash. I still reported it: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1757978
-- 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/1757960 Title: Gnome Shell crashes with SIGSEGV when I turn off the monitor Status in gnome-shell package in Ubuntu: Incomplete Bug description: For quite some time, I have seen my gnome-shell session randomly dying on me when I am away from the desktop for quite some time. Only now have I found the reproducable cause: when my monitor is turned off (by power preserving or by pressing the power button), Shell SISSEGVs out of existance. I guess it is highly related to my destop configuration: I use proprietary NVIDIA drivers and my display is connected via DisplayPort, if this gives you ideas. Maybe in the end the bug is in the driver? Here are some system logs around the time of a crash, maybe it can give you ideas what to check or whom to blame. If you need any other information, don't hesitate asking me for it, I will try my best. --- ApportVersion: 2.20.7-0ubuntu3.7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME DisplayManager: gdm3 DistroRelease: Ubuntu 17.10 GsettingsChanges: org.gnome.shell enabled-extensions ['alternate-...@gnome-shell-extensions.gcampax.github.com', 'workspace-g...@mathematical.coffee.gmail.com', 'panel-...@berend.de.schouwer.gmail.com', 'Per_Window_Keyboard_Layout@nullie-laptop', 'ubuntu-appindicat...@ubuntu.com', 'system-moni...@paradoxxx.zero.gmail.com', 'disconnect-w...@kgshank.net', 'logoutbut...@kyle.aims.ac.za', 'native-window-placem...@gnome-shell-extensions.gcampax.github.com', 'drive-m...@gnome-shell-extensions.gcampax.github.com', 'remove-dropdown-arr...@mpdeimos.com'] org.gnome.shell command-history ['', 'r'] org.gnome.shell favorite-apps ['org.gnome.Terminal.desktop', 'org.gnome.Nautilus.desktop', 'google-chrome.desktop'] org.gnome.desktop.interface gtk-im-module 'ibus' org.gnome.desktop.interface clock-show-date true InstallationDate: Installed on 2017-03-05 (381 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia Package: gnome-shell 3.26.2-0ubuntu0.1 PackageArchitecture: amd64 ProcEnviron: TERM=tmux-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=ru_RU.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 4.13.0-37.42-generic 4.13.13 Tags: artful Uname: Linux 4.13.0-37-generic x86_64 UpgradeStatus: Upgraded to artful on 2018-01-11 (69 days ago) UserGroups: adm cdrom dip docker lpadmin lxd plugdev sambashare sudo video wireshark _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1757960/+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