Just for the sake of adding a comment too... I am getting this in the following situation. I hope the description is correct. 1) I change the display set-up on my laptop slightly too fast, e.g. close the lid, re-open, re-close (I did that quite a bit recently trying to work out bug patterns). 2) GNOME Shell creates a wl_output object for the internal screen, reports it to Xwayland, then removes it again because the screen is disabled again. 3) Xwayland asks GNOME Shell for more information about the no-longer-existing wl_output object and GNOME Shell (in the Wayland library code) terminates the connection because it considers asking about a non-existing object to be a bug. 4) Xwayland dutifully terminates and GNOME Shell panics and terminates too.
See: https://phabricator.freedesktop.org/T7722 -- 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/1505409 Title: gnome-shell crashed with SIGTRAP in x_io_error() from _XIOError() from _XEventsQueued() from XPending() from gdk_check_xpending() ["Connection to xwayland lost"] Status in GNOME Shell: Confirmed Status in Ubuntu GNOME: Confirmed Status in gdm3 package in Ubuntu: Confirmed Status in gnome-shell package in Ubuntu: Confirmed Status in mutter package in Ubuntu: Confirmed Status in gdm3 source package in Artful: Confirmed Status in gnome-shell source package in Artful: Confirmed Status in mutter source package in Artful: Confirmed Bug description: https://errors.ubuntu.com/problem/d0252e2b465152efea2511e72f1e31681e2b2742 --- Occurred during start-up, before I did anything special... 1 Ubuntu Wily Werewolf (development branch) 15.10 2 3.16.3-1ubuntu6 3&4 not applicable ProblemType: Crash DistroRelease: Ubuntu 15.10 Package: gnome-shell 3.16.3-1ubuntu6 ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 Uname: Linux 4.2.0-16-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.19.1-0ubuntu2 Architecture: amd64 CurrentDesktop: GNOME Date: Mon Oct 12 19:22:07 2015 DisplayManager: gdm ExecutablePath: /usr/bin/gnome-shell GsettingsChanges: InstallationDate: Installed on 2015-10-08 (4 days ago) InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Alpha amd64 (20150924) ProcCmdline: gnome-shell --mode=gdm --wayland --display-server ProcEnviron: SHELL=/bin/false PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=nl_NL.UTF-8 Signal: 5 SourcePackage: gnome-shell StacktraceTop: ?? () from /usr/lib/libmutter.so.0 _XIOError () from /usr/lib/x86_64-linux-gnu/libX11.so.6 _XEventsQueued () from /usr/lib/x86_64-linux-gnu/libX11.so.6 XPending () 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: No upgrade log present (probably fresh install) UserGroups: To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-shell/+bug/1505409/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
