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...