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 ['<email address hidden>', '<email address hidden>', '<email address hidden>', 'Per_Window_Keyboard_Layout@nullie-laptop', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>', '<email address hidden>']
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
This is a known issue with multiple causes, so we need to figure out which cause you are experiencing.
Please:
1. Run 'apport-collect 1757960' on the machine to provide us with system info.
2. If you are using a release older than 18.04 then please apply the workaround from bug 994921.
3. Reproduce the crash.
4. Look in /var/crash for crash files.
5. Run this command:
ubuntu-bug /var/crash/
6. Let us know here the ID of the newly-created bug from step 5.