Your logs show two (possibly separate) problems that will crash gnome- shell:
Oct 31 10:30:20 username-thelab gnome-shell[2666]: setup_framebuffers: assertion 'width > 0' failed and Oct 31 11:30:55 username-thelab gnome-session-binary[2598]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 11 So we need some more concrete information. Please forgive the canned response below :) --- Thank you for taking the time to report this bug and helping to make Ubuntu better. However, your crash report is either missing or challenging to deal with as a ".crash" file. Please follow these instructions to have apport report a new bug about your crash that can be dealt with by the automatic retracer. If you are running the Ubuntu Stable Release you might need to enable apport in /etc/default/apport and restart. Now open your file manager, navigate to your /var/crash directory and open the crash report you wish to submit. If this fails you will have to open a terminal and file your report with 'ubuntu-bug /var/crash/_my_crash_report.crash' where _my_crash_report.crash is the crash you would like to report. If you get an error that you aren't allowed to access this report you will have to file it with 'sudo ubuntu-bug /var/crash/_my_crash_report.crash'. ** Bug watch removed: GNOME Bug Tracker #789501 https://bugzilla.gnome.org/show_bug.cgi?id=789501 ** Changed in: gnome-shell (Ubuntu) Status: Confirmed => Incomplete -- 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/1729028 Title: gnome-shell crashes after period of inactivity Status in gnome-shell package in Ubuntu: Incomplete Bug description: Gnome shell crashes reliably and only after a period of inactivity (15+ minutes). I have not seen it crash while using the desktop - even for hours at a time. I suspect it has something to do with locking the screen or turning off the monitor. However even after attempting to disable both lockscreen and blank screen it still happens. After a crash dmesg shows [ 3726.608957] gnome-shell[2666]: segfault at 38 ip 00007fc6a7330c30 sp 00007fff0d12fe78 error 4 in libmutter-1.so.0.0.0[7fc6a72de000+141000] When the crash happens it goes back to the login screen. Logging in works fine. It happens pretty reliably but will sometimes successfully lock and blank the screen. I would say it happens 90% of the time I leave the computer alone for awhile. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: gnome-shell 3.26.1-0ubuntu5 ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4 Uname: Linux 4.13.0-16-generic x86_64 ApportVersion: 2.20.7-0ubuntu3.1 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Tue Oct 31 11:34:11 2017 DisplayManager: gdm3 GsettingsChanges: b'org.gnome.shell' b'favorite-apps' b"['org.gnome.Nautilus.desktop', 'google-chrome.desktop', 'firefox.desktop', 'code.desktop', 'org.gnome.Terminal.desktop', 'libreoffice-writer.desktop', 'libreoffice-calc.desktop', 'libreoffice-impress.desktop', 'org.gnome.Software.desktop', 'gnome-control-center.desktop']" b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'" b'org.gnome.desktop.interface' b'clock-format' b"'12h'" b'org.gnome.desktop.interface' b'text-scaling-factor' b'1.25' InstallationDate: Installed on 2017-07-18 (105 days ago) InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: gnome-shell UpgradeStatus: Upgraded to artful on 2017-10-18 (12 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1729028/+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

