Actually (a) might be explained if Xwayland is restarting itself on some X error. But in Xorg terms it can restart the server anew without exiting. So gnome-shell would see this as a crash while the Xwayland process stays running.
-- 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 : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp