You have been subscribed to a public bug:

I'm uncertain if this is specific to System76, or if it is resulting
from an error in systemd or gdm3.

Symptoms:
Unprompted, screen will go black, and then bring you back to the login screen. 
Upon entering the password to log back in you're brought back to a black 
screen. Hitting ctrl+alt+f5 I'm able to get back to a terminal, login, and 
restart gdm to be brought back to the desktop (sudo systemctl restart gdm)

Specs:
System76 Darter Pro

inxi
CPU: Quad Core Intel Core i7-10510U (-MT MCP-) 
speed/min/max: 1195/400/4900 MHz Kernel: 5.11.0-7620-generic x86_64 Up: 30m 
Mem: 5091.7/31984.5 MiB (15.9%) Storage: 465.76 GiB (76.2% used) Procs: 371 
Shell: bash 5.0.17 inxi: 3.0.38

lsb_release -a
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.2 LTS
Release:        20.04
Codename:       focal

Logs
>From /var/log/syslog at the time of the disruption:
Jul 21 08:18:36 user-Darter-Pro systemd-resolved[1289]: Freeing transaction 
62282.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: We couldn't coldplug 
machine-qemu\x2d1\x2dubuntu20.04.scope, proceeding anyway: Connection timed out
Jul 21 08:18:38 user-Darter-Pro systemd[1]: NetworkManager.service: Unexpected 
error response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro systemd[1]: wpa_supplicant.service: Unexpected 
error response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro NetworkManager[1364]: <info>  [1626873518.6564] 
caught SIGTERM, shutting down normally.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: udisks2.service: Unexpected error 
response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro systemd[1]: switcheroo-control.service: 
Unexpected error response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro systemd[1]: switcheroo-control.service: 
Succeeded.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: accounts-daemon.service: Unexpected 
error response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro systemd[1]: gdm.service: Unexpected error 
response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro systemd[1]: thermald.service: Unexpected error 
response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro systemd[1]: systemd-logind.service: Unexpected 
error response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro thermald[1409]: Terminating ...
Jul 21 08:18:38 user-Darter-Pro system76-power[1406]: [INFO] caught signal: 
SIGTERM
Jul 21 08:18:38 user-Darter-Pro systemd[1]: system76-power.service: Unexpected 
error response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro avahi-daemon[1355]: Got SIGTERM, quitting.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: systemd-machined.service: 
Unexpected error response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro avahi-daemon[1355]: Leaving mDNS multicast 
group on interface vnet0.IPv6 with address fe80::fc54:ff:fe01:19ab.
Jul 21 08:18:38 user-Darter-Pro kernel: [ 2399.879916] wlp0s20f3: 
deauthenticating from 30:23:03:db:ac:19 by local choice (Reason: 
3=DEAUTH_LEAVING)
Jul 21 08:18:38 user-Darter-Pro ModemManager[1518]: <info>  Caught signal, 
shutting down...
Jul 21 08:18:38 user-Darter-Pro systemd[1]: avahi-daemon.service: Unexpected 
error response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro pulseaudio[2373]: X connection to :0 broken 
(explicit kill or server shutdown).
Jul 21 08:18:38 user-Darter-Pro systemd[1]: ModemManager.service: Unexpected 
error response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro chromium_chromium.desktop[4790]: 
[4790:4790:0721/081838.663429:ERROR:pulse_util.cc(343)] pa_operation is nullptr.
Jul 21 08:18:38 user-Darter-Pro chromium_chromium.desktop[4790]: 
[4790:4790:0721/081838.663447:ERROR:pulse_util.cc(343)] pa_operation is nullptr.
Jul 21 08:18:38 user-Darter-Pro chromium_chromium.desktop[4790]: 
[4790:4790:0721/081838.663498:ERROR:pulse_util.cc(343)] pa_operation is nullptr.
Jul 21 08:18:38 user-Darter-Pro bluetoothd[1357]: Terminating
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (WW) 
modeset(0): flip queue failed: Permission denied
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (WW) 
modeset(0): Page flip failed: Permission denied
Jul 21 08:18:38 user-Darter-Pro systemd[1]: systemd-machined.service: Succeeded.
Jul 21 08:18:38 user-Darter-Pro wpa_supplicant[1411]: wlp0s20f3: 
CTRL-EVENT-DISCONNECTED bssid=30:23:03:db:ac:19 reason=3 locally_generated=1
Jul 21 08:18:38 user-Darter-Pro gnome-shell[2614]: gnome-shell: Fatal IO error 
11 (Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro avahi-daemon[1355]: Leaving mDNS multicast 
group on interface virbr0.IPv4 with address 192.168.122.1.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: polkit.service: Unexpected error 
response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro avahi-daemon[1355]: Leaving mDNS multicast 
group on interface wlp0s20f3.IPv6 with address fe80::ff4f:4b7f:e7b1:ae93.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: bluetooth.service: Unexpected error 
response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro avahi-daemon[1355]: Leaving mDNS multicast 
group on interface wlp0s20f3.IPv4 with address 192.168.1.129.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: bolt.service: Unexpected error 
response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro avahi-daemon[1355]: Leaving mDNS multicast 
group on interface lo.IPv6 with address ::1.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: colord.service: Unexpected error 
response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro avahi-daemon[1355]: Leaving mDNS multicast 
group on interface lo.IPv4 with address 127.0.0.1.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: packagekit.service: Unexpected 
error response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro dbus-daemon[1363]: Unknown group "power" in 
message bus configuration file
Jul 21 08:18:38 user-Darter-Pro systemd[1]: fwupd.service: Unexpected error 
response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro systemd[1]: rtkit-daemon.service: Unexpected 
error response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro systemd[1]: upower.service: Unexpected error 
response from GetNameOwner(): Connection terminated
Jul 21 08:18:38 user-Darter-Pro systemd[1]: rtkit-daemon.service: Succeeded.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME X11 Session 
(session: ubuntu).
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target Current graphical 
user session.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: unicast-local-avahi.path: 
Succeeded.
Jul 21 08:18:38 user-Darter-Pro systemd-resolved[1289]: Removing scope on link 
wlp0s20f3, protocol dns, family *
Jul 21 08:18:38 user-Darter-Pro NetworkManager[1364]: <info>  [1626873518.6664] 
device (wlp0s20f3): state change: activated -> deactivating (reason 
'unmanaged', sys-iface-state: 'managed')
Jul 21 08:18:38 user-Darter-Pro systemd[1]: accounts-daemon.service: Succeeded.
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (EE) 
modeset(0): failed to set mode: Permission denied
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (EE) 
modeset(0): failed to set mode: Permission denied
Jul 21 08:18:38 user-Darter-Pro dbus-daemon[1363]: [system] Reloaded 
configuration
Jul 21 08:18:38 user-Darter-Pro chromium_chromium.desktop[4790]: 
[4790:4790:0721/081838.672876:ERROR:pulse_util.cc(343)] pa_operation is nullptr.
Jul 21 08:18:38 user-Darter-Pro chromium_chromium.desktop[4790]: 
[4790:4790:0721/081838.672919:ERROR:pulse_util.cc(343)] pa_operation is nullptr.
Jul 21 08:18:38 user-Darter-Pro avahi-daemon[1355]: avahi-daemon 0.7 exiting.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: upower.service: Succeeded.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped Path trigger for Avahi 
.local domain notifications.
Jul 21 08:18:38 user-Darter-Pro ibus-daemon[2641]: GChildWatchSource: Exit 
status of a child process was requested but ECHILD was received by waitpid(). 
See the documentation of g_child_watch_source_new() for possible causes.
Jul 21 08:18:38 user-Darter-Pro ibus-daemon[2641]: GChildWatchSource: Exit 
status of a child process was requested but ECHILD was received by waitpid(). 
See the documentation of g_child_watch_source_new() for possible causes.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: update-notifier-crash.path: 
Succeeded.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: avahi-daemon.service: Succeeded.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: colord.service: Succeeded.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: packagekit.service: Succeeded.
Jul 21 08:18:38 user-Darter-Pro udisksd[1410]: udisks daemon version 2.8.4 
exiting
Jul 21 08:18:38 user-Darter-Pro at-spi-bus-launcher[2663]: X connection to :0 
broken (explicit kill or server shutdown).
Jul 21 08:18:38 user-Darter-Pro gsd-media-keys[2748]: gsd-media-keys: Fatal IO 
error 11 (Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro gsd-keyboard[2747]: gsd-keyboard: Fatal IO 
error 11 (Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro gsd-xsettings[2777]: gsd-xsettings: Fatal IO 
error 11 (Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro gsd-wacom[2758]: gsd-wacom: Fatal IO error 11 
(Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro xdg-desktop-por[3155]: xdg-desktop-portal-gtk: 
Fatal IO error 11 (Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro gnome-shell[4075]: Gdk-Message: 08:18:38.690: 
/usr/lib/firefox/firefox: Fatal IO error 11 (Resource temporarily unavailable) 
on X server :0.
Jul 21 08:18:38 user-Darter-Pro gnome-shell[4118]: Gdk-Message: 08:18:38.691: 
/usr/lib/firefox/firefox: Fatal IO error 11 (Resource temporarily unavailable) 
on X server :0.
Jul 21 08:18:38 user-Darter-Pro chromium_chromium.desktop[4092]: 
[4092:4092:0721/081838.691613:ERROR:gl_surface_presentation_helper.cc(259)] 
GetVSyncParametersIfAvailable() failed for 1 times!
Jul 21 08:18:38 user-Darter-Pro gnome-shell[4240]: Gdk-Message: 08:18:38.691: 
/usr/lib/firefox/firefox: Fatal IO error 11 (Resource temporarily unavailable) 
on X server :0.
Jul 21 08:18:38 user-Darter-Pro chromium_chromium.desktop[4092]: 
[4092:4092:0721/081838.691795:ERROR:connection.cc(66)] X connection error 
received.
Jul 21 08:18:38 user-Darter-Pro update-notifier[5237]: update-notifier: Fatal 
IO error 11 (Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (**) Option 
"fd" "26"
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (II) event3  
- Power Button: device removed
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (**) Option 
"fd" "29"
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (II) event5  
- System76 ACPI Hotkeys: device removed
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (**) Option 
"fd" "30"
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (II) event0  
- Power Button: device removed
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (**) Option 
"fd" "31"
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (II) event1  
- Sleep Button: device removed
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (**) Option 
"fd" "32"
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (II) event6  
- PixArt USB Optical Mouse: device removed
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (**) Option 
"fd" "33"
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (II) event9  
- Chicony USB2.0 Camera: Chicony : device removed
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (**) Option 
"fd" "34"
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (II) event8  
- Intel HID events: device removed
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (**) Option 
"fd" "35"
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (II) event4  
- AT Translated Set 2 keyboard: device removed
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (**) Option 
"fd" "36"
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (II) event7  
- SynPS/2 Synaptics TouchPad: device removed
Jul 21 08:18:38 user-Darter-Pro gnome-terminal-[8675]: gnome-terminal-server: 
Fatal IO error 11 (Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro hidpi-daemon[2816]: hidpi-daemon: Fatal IO 
error 11 (Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: polkit.service: Succeeded.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped Path trigger for Apport 
crash notifications.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: update-notifier-release.path: 
Succeeded.
Jul 21 08:18:38 user-Darter-Pro indicator-cpufr[2812]: indicator-cpufreq: Fatal 
IO error 11 (Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: udisks2.service: Succeeded.
Jul 21 08:18:38 user-Darter-Pro evolution-alarm[2806]: evolution-alarm-notify: 
Fatal IO error 11 (Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro chromium_chromium.desktop[4092]: 
[4092:4746:0721/081838.699725:ERROR:connection.cc(66)] X connection error 
received.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped Path trigger for new 
release of Ubuntu notifications.
Jul 21 08:18:38 user-Darter-Pro dbus-daemon[1363]: [system] Activating via 
systemd: service name='org.freedesktop.nm_dispatcher' 
unit='dbus-org.freedesktop.nm-dispatcher.service' requested by ':1.15' (uid=0 
pid=1364 comm="/usr/sbin/NetworkManager --no-daemon " label="unconfined")
Jul 21 08:18:38 user-Darter-Pro gnome-shell[4775]: Gdk-Message: 08:18:38.691: 
/usr/lib/firefox/firefox: Fatal IO error 11 (Resource temporarily unavailable) 
on X server :0.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME Session.
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (II) 
UnloadModule: "libinput"
Jul 21 08:18:38 user-Darter-Pro /usr/lib/gdm3/gdm-x-session[2471]: (II) 
systemd-logind: releasing fd for 13:71
Jul 21 08:18:38 user-Darter-Pro gnome-shell[4083]: Gdk-Message: 08:18:38.694: 
/usr/lib/firefox/firefox: Fatal IO error 11 (Resource temporarily unavailable) 
on X server :0.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME X11 Session.
Jul 21 08:18:38 user-Darter-Pro gnome-shell[4026]: Gdk-Message: 08:18:38.690: 
/usr/lib/firefox/firefox: Fatal IO error 11 (Resource temporarily unavailable) 
on X server :0.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME Session 
(session: ubuntu).
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME 
Accessibility settings.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME Color 
management.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME Date & Time 
handling.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME Maintenance 
of expirable data.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME Keyboard 
handling.
Jul 21 08:18:38 user-Darter-Pro ModemManager[1518]: <info>  ModemManager is 
shut down
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME Media keys 
handling.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME Power 
management handling.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME Printer 
notifications.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME RFKill 
handling.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME Freedesktop 
screensaver handling.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME Sharing 
handling.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME Smartcard 
handling.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME Sound 
sample caching handling.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME USB 
protection handling.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME Wacom 
handling.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME WWan 
management.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME XSettings.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped target GNOME session X11 
services.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME Terminal Server...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME Accessibility 
settings...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME Color 
management...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME Date & Time 
handling...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME Maintenance of 
expirable data...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME Keyboard 
handling...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME Media keys 
handling...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME Power management 
handling...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME Printer 
notifications...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME RFKill handling...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME Freedesktop 
screensaver handling...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME Sharing 
handling...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME Smartcard 
handling...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME Sound sample 
caching handling...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME USB protection 
handling...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME Wacom handling...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME WWan management...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopping GNOME XSettings...
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: pulseaudio.service: Main process 
exited, code=exited, status=1/FAILURE
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: pulseaudio.service: Failed with 
result 'exit-code'.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: ModemManager.service: Succeeded.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: bolt.service: Succeeded.
Jul 21 08:18:38 user-Darter-Pro dbus-daemon[2379]: [session uid=1000 pid=2379] 
Activating via systemd: service name='org.freedesktop.Tracker1' 
unit='tracker-store.service' requested by ':1.2' (uid=1000 pid=2375 
comm="/usr/libexec/tracker-miner-fs " label="unconfined")
Jul 21 08:18:38 user-Darter-Pro gsd-power[2749]: gsd-power: Fatal IO error 11 
(Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro bluetoothd[1357]: Endpoint unregistered: 
sender=:1.75 path=/MediaEndpoint/A2DPSink/sbc
Jul 21 08:18:38 user-Darter-Pro gsd-color[2740]: gsd-color: Fatal IO error 11 
(Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro bluetoothd[1357]: Endpoint unregistered: 
sender=:1.75 path=/MediaEndpoint/A2DPSource/sbc
Jul 21 08:18:38 user-Darter-Pro mattermost-desk[3893]: mattermost-desktop: 
Fatal IO error 11 (Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro dbus-daemon[1363]: [system] Activating via 
systemd: service name='org.freedesktop.login1' 
unit='dbus-org.freedesktop.login1.service' requested by ':1.80' (uid=1000 
pid=2471 comm="/usr/lib/xorg/Xorg vt2 -displayfd 3 -auth /run/use" 
label="unconfined")
Jul 21 08:18:38 user-Darter-Pro flameshot[2813]: flameshot: Fatal IO error 11 
(Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro chrome[3741]: chrome: Fatal IO error 11 
(Resource temporarily unavailable) on X server :0.
Jul 21 08:18:38 user-Darter-Pro wpa_supplicant[1411]: nl80211: deinit 
ifname=wlp0s20f3 disabled_11b_rates=0
Jul 21 08:18:38 user-Darter-Pro chromium_chromium.desktop[4092]: XIO:  fatal IO 
error 11 (Resource temporarily unavailable) on X server ":0"
Jul 21 08:18:38 user-Darter-Pro chromium_chromium.desktop[4092]:       after 
620548 requests (620548 known processed) with 0 events remaining.
Jul 21 08:18:38 user-Darter-Pro systemd[1]: fwupd.service: Succeeded.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gnome-shell-x11.service: 
Succeeded.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped GNOME Shell on X11.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-a11y-settings.service: 
Succeeded.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped GNOME Accessibility 
settings.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-color.service: Main process 
exited, code=exited, status=1/FAILURE
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-color.service: Failed with 
result 'exit-code'.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped GNOME Color management.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-color.service: Triggering 
OnFailure= dependencies.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Requested transaction 
contradicts existing jobs: Transaction for gnome-session-failed.target/start is 
destructive (gsd-power.service has 'stop' job queued, but 'start' is included 
in transaction).
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-color.service: Failed to 
enqueue OnFailure= job, ignoring: Transaction for 
gnome-session-failed.target/start is destructive (gsd-power.service has 'stop' 
job queued, but 'start' is included in transaction).
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-datetime.service: Succeeded.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped GNOME Date & Time 
handling.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-housekeeping.service: 
Succeeded.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped GNOME Maintenance of 
expirable data.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-keyboard.service: Main 
process exited, code=exited, status=1/FAILURE
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-keyboard.service: Failed 
with result 'exit-code'.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped GNOME Keyboard handling.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-keyboard.service: Triggering 
OnFailure= dependencies.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Requested transaction 
contradicts existing jobs: Transaction for gnome-session-failed.target/start is 
destructive (gsd-power.service has 'stop' job queued, but 'start' is included 
in transaction).
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-keyboard.service: Failed to 
enqueue OnFailure= job, ignoring: Transaction for 
gnome-session-failed.target/start is destructive (gsd-power.service has 'stop' 
job queued, but 'start' is included in transaction).
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-media-keys.service: Main 
process exited, code=exited, status=1/FAILURE
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-media-keys.service: Failed 
with result 'exit-code'.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Stopped GNOME Media keys 
handling.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-media-keys.service: 
Triggering OnFailure= dependencies.
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: Requested transaction 
contradicts existing jobs: Transaction for gnome-session-failed.target/start is 
destructive (gsd-wacom.service has 'stop' job queued, but 'start' is included 
in transaction).
Jul 21 08:18:38 user-Darter-Pro systemd[2366]: gsd-media-keys.service: Failed 
to enqueue OnFailure= job, ignoring: Transaction for 
gnome-session-failed.target/start is destructive (gsd-wacom.service has 'stop' 
job queued, but 'start' is included in transaction).

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New

-- 
System76 - systemd and gnome errors, crash with black screen
https://bugs.launchpad.net/bugs/1937089
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