gnome-shell crashed with signal 5 in _XIOError()

[Wayne Bell]

Description: Ubuntu Artful Aardvark (development branch)
Release: 17.10

Ubuntu's error reporting system didn't give me much to go on, but I'm guessing gnome-shell crashed sometime this past week, I rebooted into Cinnamon, and Ubuntu's tool is just now giving me the opportunity to report it (as it told me one or more files was missing the last time I tried to report it, but an apt update/upgrade has resolved that). I didn't see any bugs that matched exactly on a simple check. A Google search led to multiple bugs w/ the same error message that are mostly duplicates of:

https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1505409

though one was a dupe of:

https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1556601

I'm running the Dev branch, so I expect bugs. Just posting to help in case it's not a duplicate. Wish there were a better way to tell if this was a dupe so as to not waste your time if it is.

ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: gnome-shell 3.24.2-0ubuntu7
Uname: Linux 4.12.0-041200-generic x86_64
ApportVersion: 2.20.5-0ubuntu5
Architecture: amd64
CrashCounter: 1
CurrentDesktop: GNOME-Greeter:GNOME
Date: Sat Jul 15 20:06:46 2017
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
GsettingsChanges:

InstallationDate: Installed on 2017-02-20 (146 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/false
Signal: 5
SourcePackage: gnome-shell
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libmutter-0.so.0
 _XIOError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 XSync () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
Title: gnome-shell crashed with signal 5 in _XIOError()
UpgradeStatus: Upgraded to artful on 2017-05-08 (68 days ago)
UserGroups:

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1556601, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.