I can see error messages like this in the log: "CRITICAL: We failed, but the fail whale is dead. Sorry...."
touko 28 10:05:38 elite gsd-clipboard[5250]: gsd-clipboard: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. touko 28 10:05:38 elite gsd-xsettings[5224]: gsd-xsettings: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. touko 28 10:05:38 elite unknown[5232]: gsd-wacom: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.SettingsDaemon.Clipboard.desktop' exited with code 1 touko 28 10:05:38 elite unknown[5210]: gsd-power: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. touko 28 10:05:38 elite gsd-color[5245]: gsd-color: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. touko 28 10:05:38 elite gnome-shell[5099]: gnome-shell: Fatal IO error 0 (Success) on X server :0. touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.SettingsDaemon.MediaKeys.desktop' exited with code 1 touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.SettingsDaemon.Keyboard.desktop' exited with code 1 touko 28 10:05:38 elite polkitd(authority=local)[1476]: Unregistered Authentication Agent for unix-session:5 (system bus name :1.247, object path /org/freedesktop/PolicyKit1/AuthenticationAge touko 28 10:05:38 elite gsd-color[2275]: failed to connect to device: Failed to connect to missing device /org/freedesktop/ColorManager/devices/xrandr_Dell_Inc__DELL_U2515H_9X2VY5CG12LL_sami_ touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.Shell.desktop' exited with code 1 touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.SettingsDaemon.XSettings.desktop' exited with code 1 touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.SettingsDaemon.Color.desktop' exited with code 1 touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.SettingsDaemon.Wacom.desktop' exited with code 1 touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.SettingsDaemon.Power.desktop' exited with code 1 touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.SettingsDaemon.Clipboard.desktop' exited with code 1 touko 28 10:05:38 elite gnome-control-c[5869]: gnome-control-center: Fatal IO error 11 (Resource temporarily unavailable) on X server :0. touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.SettingsDaemon.MediaKeys.desktop' exited with code 1 touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.SettingsDaemon.Keyboard.desktop' exited with code 1 touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.SettingsDaemon.XSettings.desktop' exited with code 1 touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.SettingsDaemon.Color.desktop' exited with code 1 touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.Shell.desktop' exited with code 1 touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: WARNING: App 'org.gnome.Shell.desktop' respawning too quickly touko 28 10:05:38 elite gnome-session-binary[4955]: Unrecoverable failure in required component org.gnome.Shell.desktop touko 28 10:05:38 elite gnome-session[4955]: gnome-session-binary[4955]: CRITICAL: We failed, but the fail whale is dead. Sorry.... touko 28 10:05:38 elite gnome-session-binary[4955]: CRITICAL: We failed, but the fail whale is dead. Sorry.... touko 28 10:05:38 elite kernel: rfkill: input handler enabled touko 28 10:05:38 elite at-spi-bus-launcher[5057]: XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0" touko 28 10:05:38 elite at-spi-bus-launcher[5057]: after 69 requests (69 known processed) with 0 events remaining. touko 28 10:05:38 elite gdm-password][4897]: pam_unix(gdm-password:session): session closed for user sami touko 28 10:05:38 elite gnome-shell[2080]: Object St.Icon (0x55f7781d71a0), has been already finalized. Impossible to set any property to it. touko 28 10:05:38 elite gnome-shell[2080]: Object St.BoxLayout (0x55f7781d5c10), has been already finalized. Impossible to set any property to it. touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: == Stack trace for context 0x55f7776c9320 == touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: #0 0x55f777a77fe0 i resource:///org/gnome/shell/ui/osdWindow.js:206 (0x7feaa42c96f8 @ 231) touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: #1 0x7ffd8bc93230 b resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7feaa44b5de0 @ 71) touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: #2 0x7ffd8bc932f0 b self-hosted:915 (0x7feaa44f12b8 @ 367) touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: #3 0x7ffd8bc933e0 b resource:///org/gnome/gjs/modules/signals.js:128 (0x7feaa44d3230 @ 386) touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: #4 0x55f777a77f58 i resource:///org/gnome/shell/ui/layout.js:531 (0x7feaa42042b8 @ 127) touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: #5 0x55f777a77eb0 i resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7feaa44b5de0 @ 71) touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: #6 0x55f777a77df0 i self-hosted:915 (0x7feaa44f12b8 @ 367) touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: == Stack trace for context 0x55f7776c9320 == touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: #0 0x55f777a77fe0 i resource:///org/gnome/shell/ui/osdWindow.js:207 (0x7feaa42c96f8 @ 258) touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: #1 0x7ffd8bc93230 b resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7feaa44b5de0 @ 71) touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: #2 0x7ffd8bc932f0 b self-hosted:915 (0x7feaa44f12b8 @ 367) touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: #3 0x7ffd8bc933e0 b resource:///org/gnome/gjs/modules/signals.js:128 (0x7feaa44d3230 @ 386) touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: #4 0x55f777a77f58 i resource:///org/gnome/shell/ui/layout.js:531 (0x7feaa42042b8 @ 127) touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: #5 0x55f777a77eb0 i resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7feaa44b5de0 @ 71) touko 28 10:05:38 elite org.gnome.Shell.desktop[2080]: #6 0x55f777a77df0 i self-hosted:915 (0x7feaa44f12b8 @ 367) touko 28 10:05:40 elite systemd-logind[1383]: Removed session 5. touko 28 10:05:40 elite systemd[1]: Stopping User Manager for UID 1000... -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1773744 Title: Desktop session crash Status in xorg package in Ubuntu: New Bug description: If I connect third monitor to my Ubuntu PC, the whole graphical display session crashes. Additionally, the login does not show texts correctly. The texts are mostly missing. The errors happend with both Wayland and X. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xorg 1:7.7+19ubuntu7 ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17 Uname: Linux 4.15.0-22-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Mon May 28 10:15:54 2018 DistUpgraded: 2018-04-25 16:14:35,274 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py' DistroCodename: bionic DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [8086:0412] (rev 06) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [103c:18e4] Advanced Micro Devices, Inc. [AMD/ATI] Caicos XTX [Radeon HD 8490 / R5 235X OEM] [1002:6771] (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Caicos XTX [Radeon HD 8490 / R5 235X OEM] [103c:90b8] InstallationDate: Installed on 2016-11-22 (551 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2) MachineType: Hewlett-Packard HP EliteDesk 800 G1 TWR ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.15.0-22-generic root=UUID=6c13d412-1c2a-4455-bfe8-351c03c72d2b ro rootflags=subvol=@ quiet splash vt.handoff=1 SourcePackage: xorg Symptom: display Title: Xorg crash UpgradeStatus: Upgraded to bionic on 2018-04-25 (32 days ago) dmi.bios.date: 09/09/2013 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: L01 v02.18 dmi.board.asset.tag: CZC3427KBP dmi.board.name: 18E4 dmi.board.vendor: Hewlett-Packard dmi.chassis.asset.tag: CZC3427KBP dmi.chassis.type: 6 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvrL01v02.18:bd09/09/2013:svnHewlett-Packard:pnHPEliteDesk800G1TWR:pvr:rvnHewlett-Packard:rn18E4:rvr:cvnHewlett-Packard:ct6:cvr: dmi.product.family: 103C_53307F G=D dmi.product.name: HP EliteDesk 800 G1 TWR dmi.sys.vendor: Hewlett-Packard version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1 version.libdrm2: libdrm2 2.4.91-2 version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.0~rc5-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.0~rc5-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1773744/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp