Public bug reported: I turned off my screen for a few hours then turned it on again and my session was no longer there and i had to login again.
The following lines from syslog at the time that i turned on the screen again look suspicious. My hypothesis is that the error from the Intel kernel driver caused the "Fatal server error" "wl_registry@2: error 0: invalid global wl_output (36)" in gnome-shell. Since the screen is actually still operational (after all, the computer didn't crash, only that session, and i was immediately shown the login screen and able to login again), what should have happened is that gnome-shell should have gracefully dealt with whatever happened without a fatal error. This is the first time this has happened, and it did not used to happen before my upgrade to Artful a few days ago. Oct 30 05:46:16 bshanks-SP4 kernel: [358036.641989] [drm:intel_mst_disable_dp [i915]] *ERROR* failed to update payload -22 Oct 30 05:46:16 bshanks-SP4 gnome-shell[7083]: WARNING: addSignalMethods is replacing existing [0x5563dd13c c40 Gjs_ShowAppsIcon.dash-item-container] connect method ... (a bunch of similar warnings about addSignalMethods) ... Oct 30 05:46:18 bshanks-SP4 org.gnome.Shell.desktop[7083]: (EE) Oct 30 05:46:18 bshanks-SP4 org.gnome.Shell.desktop[7083]: Fatal server error: Oct 30 05:46:18 bshanks-SP4 org.gnome.Shell.desktop[7083]: (EE) wl_registry@2: error 0: invalid global wl_output (36) Oct 30 05:46:18 bshanks-SP4 org.gnome.Shell.desktop[7083]: (EE) 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: Mon Oct 30 06:01:36 2017 DisplayManager: gdm3 InstallationDate: Installed on 2016-04-06 (572 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160323) SourcePackage: gnome-shell UpgradeStatus: Upgraded to artful on 2017-10-26 (4 days ago) ** Affects: gnome-shell (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug artful wayland-session -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1728588 Title: session crashed with wl_registry@2: error 0: invalid global wl_output (36) after kernel: [drm:intel_mst_disable_dp [i915]] *ERROR* failed to update payload -22 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1728588/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs