Your attach logs also show a segfault:
jan 17 07:12:01 hostname gnome-session-binary[1308]: WARNING:
Application 'org.gnome.Shell.desktop' killed by signal 11
However to work on this bug we will need to know at least the stack
trace of the crash. Please look in /var/crash for relevant crash files
and then:
1. Change this bug from Public to Private(!)
2. Attach the crash file(s) from gnome-shell here.
** Changed in: gnome-shell (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1743732
Title:
Gnome shell crashes at lock screen
Status in gnome-shell package in Ubuntu:
Incomplete
Bug description:
Ubuntu 17.10 x64, fresh install.
Every-time the lock screen kicks in, gnome shell crashes closing whatever
app you was working on or using it and dmesg reports this error.
[ 6329.119434] gnome-shell[1389]: segfault at 38 ip 00007f72fb315cf0 sp
00007ffe1c8a03d8 error 4 in libmutter-1.so.0.0.0[7f72fb2c3000+142000]
The bug is very simmilar to bug #1458158
https://bugs.launchpad.net/ubuntu/+source/gnome-screensaver/+bug/1458158
ProblemType: Bug
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 4.13.0-25-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Jan 17 07:52:01 2018
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
InstallationDate: Installed on 2018-01-16 (0 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
ProcEnviron:
LANGUAGE=pt_BR:pt:en
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=pt_BR.UTF-8
SHELL=/bin/bash
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
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