Just poking in to say this is still happening, and not magically fixed by Artful's release date. It happened today, but trying to ubuntu-bug the crash file failed. (It just quit when I clicked Continue.)
One difference today: Thinking maybe my screen-sleep woes were partly because of gnome shell being in lock mode, I tried instead disabling screen lock and suspend and just using ye olde x11 screen blanking to standby, ie: xset dpms 1200 0 0. It still died, leaving a crash file reporting this same error, at the time I tried to wake things up again. I think again, supported by the description of this bug, it was probably due to slowness in monitors waking up, or one of them having problems waking up fully at all, then gnome-shell responds ungracefully - perhaps even disgracefully - to the change in monitors. gnome shell is so damn fragile. gnome-shell 3.26.1-0ubuntu5 -- 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/1723620 Title: gnome-shell crashed with SIGSEGV in meta_window_update_for_monitors_changed() Status in gnome-shell package in Ubuntu: Confirmed Bug description: Pair this with bug #1723615: This one actually happened first, and was presumably the event that ended my gnome desktop session. Then the other one happened about 18 minutes later and happened to gdm's gnome- shell. Both occurred while I was away from the computer and the system should have been in displaysleep but not suspended. ProblemType: Crash DistroRelease: Ubuntu 17.10 Package: gnome-shell 3.26.1-0ubuntu3 ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4 Uname: Linux 4.13.0-16-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 CrashCounter: 1 CurrentDesktop: GNOME Date: Sat Oct 14 15:21:47 2017 DisplayManager: gdm3 ExecutablePath: /usr/bin/gnome-shell InstallationDate: Installed on 2017-07-30 (75 days ago) InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412) ProcCmdline: /usr/bin/gnome-shell ProcEnviron: LANGUAGE=en_GB:en PATH=(custom, user) XDG_RUNTIME_DIR=<set> LANG=en_GB.UTF-8 SHELL=/bin/bash SegvAnalysis: Segfault happened at: 0x7fd78c4b0e60 <meta_window_update_for_monitors_changed+192>: mov 0x40(%rbp),%edi PC (0x7fd78c4b0e60) ok source "0x40(%rbp)" (0x00000040) not located in a known VMA region (needed readable region)! destination "%edi" ok SegvReason: reading NULL VMA Signal: 11 SourcePackage: gnome-shell StacktraceTop: meta_window_update_for_monitors_changed () at /usr/lib/x86_64-linux-gnu/libmutter-1.so.0 g_slist_foreach () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 meta_screen_foreach_window () at /usr/lib/x86_64-linux-gnu/libmutter-1.so.0 () at /usr/lib/x86_64-linux-gnu/libmutter-1.so.0 g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 Title: gnome-shell crashed with SIGSEGV in meta_window_update_for_monitors_changed() UpgradeStatus: Upgraded to artful on 2017-08-22 (53 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1723620/+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

