Just got the same, shortly after I logged in, I opened VirtualBox (haven't started the VM yet), then Google Chrome -> went to my mails and ... just got logged out of my session!
Ubuntu 18.04; gnome-session-bin 3.28.1-0ubuntu3. Logs: -------------------------------------------------------------------------------- Jan 08 10:21:27 REDACTED gnome-session[4856]: gnome-session-binary[4856]: WARNING: Application 'org.gnome.SettingsDaemon.Keyboard.desktop' failed to register before timeout Jan 08 10:21:27 REDACTED gnome-session[4856]: gnome-session-binary[4856]: CRITICAL: We failed, but the fail whale is dead. Sorry.... Jan 08 10:21:27 REDACTED gnome-session-binary[4856]: Unrecoverable failure in required component org.gnome.SettingsDaemon.Keyboard.desktop Jan 08 10:21:27 REDACTED gnome-session-binary[4856]: WARNING: Application 'org.gnome.SettingsDaemon.Keyboard.desktop' failed to register before timeout Jan 08 10:21:27 REDACTED gnome-session-binary[4856]: CRITICAL: We failed, but the fail whale is dead. Sorry.... Jan 08 10:21:27 REDACTED virtualbox.desktop[5400]: ICE default IO error handler doing an exit(), pid = 5400, errno = 11 Jan 08 10:21:27 REDACTED bluetoothd[2624]: Endpoint unregistered: sender=:1.107 path=/MediaEndpoint/A2DPSource Jan 08 10:21:27 REDACTED bluetoothd[2624]: Endpoint unregistered: sender=:1.107 path=/MediaEndpoint/A2DPSink Jan 08 10:21:27 REDACTED kernel: rfkill: input handler enabled Jan 08 10:21:27 REDACTED gnome-shell[4958]: gnome-shell: Fatal IO error 0 (Success) on X server :1. Jan 08 10:21:27 REDACTED polkitd(authority=local)[2802]: Unregistered Authentication Agent for unix-session:3 (system bus name :1.100, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_U Jan 08 10:21:27 REDACTED at-spi-bus-launcher[4934]: XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":1" Jan 08 10:21:27 REDACTED at-spi-bus-launcher[4934]: after 145 requests (145 known processed) with 0 events remaining. Jan 08 10:21:27 REDACTED gsd-power[5096]: gsd-power: Fatal IO error 11 (Resource temporarily unavailable) on X server :1. Jan 08 10:21:27 REDACTED gsd-wacom[5117]: gsd-wacom: Fatal IO error 11 (Resource temporarily unavailable) on X server :1. Jan 08 10:21:27 REDACTED gsd-xsettings[5118]: gsd-xsettings: Fatal IO error 104 (Connection reset by peer) on X server :1. Jan 08 10:21:27 REDACTED gsd-color[5141]: gsd-color: Fatal IO error 11 (Resource temporarily unavailable) on X server :1. Jan 08 10:21:27 REDACTED gsd-clipboard[5137]: gsd-clipboard: Fatal IO error 11 (Resource temporarily unavailable) on X server :1. Jan 08 10:21:27 REDACTED gsd-media-keys[5149]: gsd-media-keys: Fatal IO error 11 (Resource temporarily unavailable) on X server :1. Jan 08 10:21:27 REDACTED gnome-terminal-[5507]: gnome-terminal-server: Fatal IO error 11 (Resource temporarily unavailable) on X server :1. Jan 08 10:21:27 REDACTED gsd-color[4623]: failed to connect to device: Failed to connect to missing device /org/freedesktop/ColorManager/devices/xrandr_BenQ_Corporation_ZOWIE_XL_LCD_BCH00737SL0_arno_1000 Jan 08 10:21:27 REDACTED systemd[4821]: gnome-terminal-server.service: Main process exited, code=exited, status=1/FAILURE Jan 08 10:21:27 REDACTED systemd[4821]: gnome-terminal-server.service: Failed with result 'exit-code'. Jan 08 10:21:28 REDACTED acpid[2618]: client 4841[0:0] has disconnected Jan 08 10:21:28 REDACTED acpid[2618]: client connected from 3353[0:0] Jan 08 10:21:28 REDACTED acpid[2618]: 1 client rule loaded Jan 08 10:21:31 REDACTED gnome-shell[3400]: JS ERROR: TypeError: this._currentWindow is null _setCurrentRect@resource:///org/gnome/shell/ui/keyboard.js:536:13 wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22 _init/<@resource:///org/gnome/shell/ui/keyboard.js:503:13 Jan 08 10:21:31 REDACTED gnome-shell[3400]: JS ERROR: TypeError: this._currentWindow is null _setCurrentRect@resource:///org/gnome/shell/ui/keyboard.js:536:13 wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22 _init/<@resource:///org/gnome/shell/ui/keyboard.js:503:13 Jan 08 10:21:32 REDACTED gnome-shell[3400]: g_array_unref: assertion 'array' failed Jan 08 10:21:32 REDACTED gnome-shell[3400]: g_array_unref: assertion 'array' failed -------------------------------------------------------------------------------- -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1764417 Title: Unrecoverable failure in required component org.gnome.SettingsDaemon.Color.desktop Status in gnome-settings-daemon package in Ubuntu: Confirmed Bug description: I've had this happen a couple of times now since upgrading to 18.04: soon (perhaps within a minute) after logging in, Gnome session ends abruptly and I'm thrown back to the login screen. IIRC, in both instances this occurred on the first login after boot, so it does not reoccur on the subsequent re-login, and not on every login (very rarely in fact), and for now I have no better steps to reproduce this other than "boot, log in". Bug #1663839 (reported against 17.04) seems similar, as does bug #1731428 (reported against 17.10). journalctl output during the issue: Apr 16 07:00:30 saegusa gnome-session[4342]: gnome-session-binary[4342]: WARNING: Application 'org.gnome.SettingsDaemon.Color.desktop' failed to register before timeout Apr 16 07:00:30 saegusa gnome-session-binary[4342]: WARNING: Application 'org.gnome.SettingsDaemon.Color.desktop' failed to register before timeout Apr 16 07:00:30 saegusa gnome-session-binary[4342]: Unrecoverable failure in required component org.gnome.SettingsDaemon.Color.desktop Apr 16 07:00:30 saegusa gnome-session[4342]: gnome-session-binary[4342]: CRITICAL: We failed, but the fail whale is dead. Sorry.... Apr 16 07:00:30 saegusa gnome-session-binary[4342]: CRITICAL: We failed, but the fail whale is dead. Sorry.... ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gnome-settings-daemon 3.28.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15 Uname: Linux 4.15.0-15-generic x86_64 ApportVersion: 2.20.9-0ubuntu4 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Apr 16 17:07:14 2018 InstallationDate: Installed on 2016-10-13 (550 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fi_FI.UTF-8 SHELL=/bin/bash SourcePackage: gnome-settings-daemon UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1764417/+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