gnome-shell crashed with SIGTRAP in _XIOError() from _XReply() from doGetScreenResources() from XRRGetScreenResourcesCurrent()

[Tomasz Kazimierczak]

https://errors.ubuntu.com/problem/e685323db4346cc05f6e7e6181d93710b1a34ce0

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Crash after disconnecting my laptop from external monitor (connected through VGA).

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: gnome-shell 3.18.4-0ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6
Uname: Linux 4.4.0-15-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CrashCounter: 1
CurrentDesktop: GNOME
Date: Thu Mar 24 00:27:31 2016
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
GsettingsChanges:

InstallationDate: Installed on 2016-02-24 (28 days ago)
InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021)
ProcCmdline: gnome-shell --mode=gdm --wayland --display-server
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pl_PL.UTF-8
 SHELL=/bin/false
Signal: 5
SourcePackage: gnome-shell
StacktraceTop:
 ?? () from /usr/lib/libmutter.so.0
 _XIOError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libXrandr.so.2
 ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
Title: gnome-shell crashed with signal 5 in _XIOError()
UpgradeStatus: Upgraded to xenial on 2016-03-02 (21 days ago)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 x_io_error () from /tmp/apport_sandbox_Yvzhkd/usr/lib/libmutter.so.0
 _XIOError (dpy=dpy@entry=0xc91700) at ../../src/XlibInt.c:1464
 _XReply (dpy=dpy@entry=0xc91700, rep=rep@entry=0x7fffe239cd10, extra=extra@entry=0, discard=discard@entry=0) at ../../src/xcb_io.c:708
 doGetScreenResources (dpy=0xc91700, window=611, poll=poll@entry=0) at ../../src/XrrScreen.c:86
 XRRGetScreenResourcesCurrent (dpy=<optimized out>, window=<optimized out>) at ../../src/XrrScreen.c:204

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Fix released (no crashes reported after 17.04)