Thank you for reporting this bug to Ubuntu. Ubuntu GNOME 16.04 (xenial) reached end-of-life on April, 2019
https://ubuntugnome.org/ubuntu-gnome-16-04-lts-is-here/ https://wiki.ubuntu.com/XenialXerus/ReleaseNotes/UbuntuGNOME We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in. ** Changed in: gnome-shell (Ubuntu) Status: Confirmed => Won't Fix -- 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/1562587 Title: gnome-shell crashed with signal 5 in _XIOError() from _XReply() from XRRGetMonitors() Status in gnome-shell package in Ubuntu: Won't Fix Bug description: nouveau crashed when I unplugged my HDMI monitor (will report that bug separately). On startup, I have seen this error. 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: Sun Mar 27 20:56:21 2016 DisplayManager: gdm3 ExecutablePath: /usr/bin/gnome-shell GsettingsChanges: InstallationDate: Installed on 2014-02-04 (782 days ago) InstallationMedia: Ubuntu-GNOME 14.04 "Trusty Tahr" - Alpha amd64 (20140203) ProcCmdline: gnome-shell --mode=gdm --wayland --display-server 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 XRRGetMonitors () 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: No upgrade log present (probably fresh install) UserGroups: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1562587/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

