Как восстановить пропавших без вести gdm3, файлы, вызывающие поврежденный вход в систему, экранируют на 18,04

Экран GUI входа в систему gdm3 повреждается с нечетными графическими артефактами и цветами. Поле ввода также часто не видимый/затеняет, но я могу вслепую войти в рабочий стол через, Входят> пароль и Gnome, DE появляется хорошо. Кажется, что часть проблемы является пропавшими без вести usr/share/gnome-shell/theme/assets/login-background.jpg файл на вывод системного журнала ниже. Не знайте, релевантна ли дополнительная оболочка гнома ошибки JS. Существует нет assets каталог вообще, CSS и svg файлы живут в usr/share/gnome-shell/theme наряду с некоторыми символьными ссылками на пользовательские темы я установил. Никакой файл login-background.jpg где угодно в системе на самом деле.

Читая другие gdm3 вопросы, я видел рекомендации переустановить gnome-shell-common для восстановления gdm3 файлов, но другая обратная связь указывает на поврежденный вход в систему/темы/и т.д. с этим подходом. Как я могу безопасно разрешить это?Спасибо

Системный журнал:

Mar  3 12:41:12 ubu-desk org.gnome.Shell.desktop[2139]: [2641:2641:0303/124112.997066:ERROR:media_internals.cc(112)] Cannot get RenderProcessHost
Mar  3 12:41:14 ubu-desk gnome-shell[2139]: JS ERROR: Exception in callback for signal: activate: Error: Error invoking IBus.set_global_engine_async:
Expected function for callback argument callback, got undefined#012setEngine@resource:///org/gnome/shell/misc/ibusManager.js:207:
9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012activateInputSource@resource:///org/gnome/shell/ui/status/keyboard.js:490:13#012wrapper@
resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_emit@resource:///org/gnome/gjs/modules/signals.js:128:27#012activate@
resource:///org/gnome/shell/ui/status/keyboard.js:65:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_inputSourcesChanged@
resource:///org/gnome/shell/ui/status/keyboard.js:620:13#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012reload@
resource:///org/gnome/shell/ui/status/keyboard.js:369:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_ibusSetContentType@
resource:///org/gnome/shell/ui/status/keyboard.js:691:9#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_emit@
resource:///org/gnome/gjs/modules/signals.js:128:27#012_setContentType@resource:///org/gnome/shell/misc/ibusManager.js:183:9#012wrapper@
resource:///org/gnome/gjs/modules/_legacy.js:82:22
[...]
Mar  3 12:43:35 ubu-desk gnome-shell[1522]: Failed to load file:///usr/share/gnome-shell/theme/assets/login-background.jpg: Error opening file /usr/share/gnome-shell/theme/assets/login-background.jpg: No such file or directory
Mar  3 12:43:36 ubu-desk gnome-shell[1522]: message repeated 6 times: [ Failed to load file:///usr/share/gnome-shell/theme/assets/login-background.jpg: Error opening file /usr/share/gnome-shell/theme/assets/login-background.jpg: No such file or directory]
Mar  3 12:43:36 ubu-desk gsd-color[1780]: failed to set screen _ICC_PROFILE: Failed to open file “/home/user/.local/share/icc/edid-c1a0cd69078353a118ddc74a6c339113.icc”: Permission denied

Система:

Ubuntu 18.04.2 LTS (up-to-date)
4.18.0-15-generic  (via 18.04.2 HWE stack)

gdm3            3.28.3-0ubuntu18.04.4
gir1.2-gdm-1.0          3.28.3-0ubuntu18.04.4
libgdm1             3.28.3-0ubuntu18.04.4
gnome-control-center        1:3.28.2-0ubuntu0.18.04.2
gnome-initial-setup     3.28.0-2ubuntu6.16.04.4
gnome-menus         3.13.3-11ubuntu1.1
gnome-session-bin       3.28.1-0ubuntu3
gnome-session-canberra      0.30-5ubuntu1
gnome-session-common        3.28.1-0ubuntu3
gnome-settings-daemon       3.28.1-0ubuntu1.1
gnome-settings-daemon-schemas   3.28.1-0ubuntu1.1
gnome-shell         3.28.3-0ubuntu0.18.04.4
gnome-shell-common      3.28.3-0ubuntu0.18.04.4
gnome-shell-extension-appindicator  18.04.1
gnome-shell-extension-ubuntu-dock   0.9.1ubuntu18.04.3
gnome-shell-extensions      3.28.0-2
gnome-software          3.28.1-0ubuntu4.18.04.8
gnome-software-common       3.28.1-0ubuntu4.18.04.8
gnome-software-plugin-snap  3.28.1-0ubuntu4.18.04.8
gnome-themes-extra      3.28-1ubuntu1
gnome-themes-extra-data     3.28-1ubuntu1
gnome-themes-standard       3.28-1ubuntu1
gnome-tweaks            3.28.1-1

Дополнительная информация согласно просьбе:

$ sudo systemctl status colord
colord.service - Manage, Install and Generate Color Profiles
   Loaded: loaded (/lib/systemd/system/colord.service; static; vendor preset: enabled)
   Active: active (running) since Sun 2019-03-03 18:27:36 EST; 29min ago
 Main PID: 1869 (colord)
    Tasks: 3 (limit: 4915)
   CGroup: /system.slice/colord.service
           └─1869 /usr/lib/colord/colord

Mar 03 18:27:36 ubu-desk systemd[1]: Starting Manage, Install and Generate Color Profiles...
Mar 03 18:27:36 ubu-desk systemd[1]: Started Manage, Install and Generate Color Profiles.


$ grep -i colord /var/log/syslog*
/var/log/syslog:Mar  3 11:17:59 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA: Error opening directory '/var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA': Permission denied
/var/log/syslog:Mar  3 11:17:59 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts: Error opening directory '/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts': Permission denied
/var/log/syslog:Mar  3 12:17:59 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA: Error opening directory '/var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA': Permission denied
/var/log/syslog:Mar  3 12:17:59 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts: Error opening directory '/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts': Permission denied
/var/log/syslog:Mar  3 13:17:59 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA: Error opening directory '/var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA': Permission denied
/var/log/syslog:Mar  3 13:17:59 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts: Error opening directory '/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts': Permission denied
/var/log/syslog:Mar  3 14:17:59 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA: Error opening directory '/var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA': Permission denied
/var/log/syslog:Mar  3 14:17:59 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts: Error opening directory '/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts': Permission denied
/var/log/syslog:Mar  3 15:17:59 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA: Error opening directory '/var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA': Permission denied
/var/log/syslog:Mar  3 15:17:59 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts: Error opening directory '/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts': Permission denied
/var/log/syslog:Mar  3 16:17:59 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA: Error opening directory '/var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA': Permission denied
/var/log/syslog:Mar  3 16:17:59 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts: Error opening directory '/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts': Permission denied
/var/log/syslog:Mar  3 17:25:55 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA: Error opening directory '/var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA': Permission denied
/var/log/syslog:Mar  3 17:25:55 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts: Error opening directory '/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts': Permission denied
/var/log/syslog:Mar  3 18:25:55 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA: Error opening directory '/var/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-MZlaaA': Permission denied
/var/log/syslog:Mar  3 18:25:55 ubu-desk gsd-housekeepin[2306]: Failed to enumerate children of /tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts: Error opening directory '/tmp/systemd-private-3ac79b469d814451abc7a94863fa97be-colord.service-9wCBts': Permission denied
/var/log/syslog:Mar  3 18:27:36 ubu-desk dbus-daemon[1334]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.64' (uid=121 pid=1727 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 10:42:38 ubu-desk gsd-housekeepin[5923]: Failed to enumerate children of /var/tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-h3RI7a: Error opening directory '/var/tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-h3RI7a': Permission denied
/var/log/syslog.1:Mar  2 10:42:38 ubu-desk gsd-housekeepin[5923]: Failed to enumerate children of /tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-mpE8qo: Error opening directory '/tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-mpE8qo': Permission denied
/var/log/syslog.1:Mar  2 11:42:38 ubu-desk gsd-housekeepin[5923]: Failed to enumerate children of /var/tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-h3RI7a: Error opening directory '/var/tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-h3RI7a': Permission denied
/var/log/syslog.1:Mar  2 11:42:38 ubu-desk gsd-housekeepin[5923]: Failed to enumerate children of /tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-mpE8qo: Error opening directory '/tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-mpE8qo': Permission denied
/var/log/syslog.1:Mar  2 12:42:38 ubu-desk gsd-housekeepin[5923]: Failed to enumerate children of /var/tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-h3RI7a: Error opening directory '/var/tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-h3RI7a': Permission denied
/var/log/syslog.1:Mar  2 12:42:38 ubu-desk gsd-housekeepin[5923]: Failed to enumerate children of /tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-mpE8qo: Error opening directory '/tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-mpE8qo': Permission denied
/var/log/syslog.1:Mar  2 13:42:38 ubu-desk gsd-housekeepin[5923]: Failed to enumerate children of /var/tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-h3RI7a: Error opening directory '/var/tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-h3RI7a': Permission denied
/var/log/syslog.1:Mar  2 13:42:38 ubu-desk gsd-housekeepin[5923]: Failed to enumerate children of /tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-mpE8qo: Error opening directory '/tmp/systemd-private-16d192ca05624438bf88c70ad69b98dd-colord.service-mpE8qo': Permission denied
/var/log/syslog.1:Mar  2 14:35:00 ubu-desk dbus-daemon[1388]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.65' (uid=121 pid=1834 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 15:28:21 ubu-desk dbus-daemon[1405]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.67' (uid=121 pid=1841 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 16:28:32 ubu-desk gsd-housekeepin[2361]: Failed to enumerate children of /var/tmp/systemd-private-c8588750b47b4c078b0d7d3099120320-colord.service-YuKHaY: Error opening directory '/var/tmp/systemd-private-c8588750b47b4c078b0d7d3099120320-colord.service-YuKHaY': Permission denied
/var/log/syslog.1:Mar  2 16:28:32 ubu-desk gsd-housekeepin[2361]: Failed to enumerate children of /tmp/systemd-private-c8588750b47b4c078b0d7d3099120320-colord.service-DdQmvQ: Error opening directory '/tmp/systemd-private-c8588750b47b4c078b0d7d3099120320-colord.service-DdQmvQ': Permission denied
/var/log/syslog.1:Mar  2 17:28:32 ubu-desk gsd-housekeepin[2361]: Failed to enumerate children of /var/tmp/systemd-private-c8588750b47b4c078b0d7d3099120320-colord.service-YuKHaY: Error opening directory '/var/tmp/systemd-private-c8588750b47b4c078b0d7d3099120320-colord.service-YuKHaY': Permission denied
/var/log/syslog.1:Mar  2 17:28:32 ubu-desk gsd-housekeepin[2361]: Failed to enumerate children of /tmp/systemd-private-c8588750b47b4c078b0d7d3099120320-colord.service-DdQmvQ: Error opening directory '/tmp/systemd-private-c8588750b47b4c078b0d7d3099120320-colord.service-DdQmvQ': Permission denied
/var/log/syslog.1:Mar  2 18:21:43 ubu-desk dbus-daemon[1470]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.68' (uid=121 pid=1881 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 18:23:06 ubu-desk dbus-daemon[1472]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.66' (uid=121 pid=1882 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 18:25:42 ubu-desk dbus-daemon[1399]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.65' (uid=121 pid=1839 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 19:18:17 ubu-desk dbus-daemon[1457]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.66' (uid=121 pid=3187 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 19:27:17 ubu-desk dbus-daemon[1383]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.65' (uid=121 pid=1820 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 19:41:18 ubu-desk dbus-daemon[1442]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.62' (uid=121 pid=1802 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 20:18:15 ubu-desk dbus-daemon[1435]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.64' (uid=121 pid=1863 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 20:22:28 ubu-desk dbus-daemon[1307]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.63' (uid=121 pid=1650 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 20:22:28 ubu-desk colord-sane: [bjnp] create_broadcast_socket: ERROR - bind socket to local address failed - Cannot assign requested address
/var/log/syslog.1:Mar  2 20:40:50 ubu-desk dbus-daemon[1316]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.63' (uid=121 pid=1711 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 21:04:36 ubu-desk dbus-daemon[1301]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.64' (uid=121 pid=1712 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 21:09:15 ubu-desk dbus-daemon[1293]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.65' (uid=121 pid=1650 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 21:09:15 ubu-desk colord-sane: [bjnp] create_broadcast_socket: ERROR - bind socket to local address failed - Cannot assign requested address
/var/log/syslog.1:Mar  2 22:09:22 ubu-desk gsd-housekeepin[2237]: Failed to enumerate children of /var/tmp/systemd-private-708805c760d842af870d2f82461f9971-colord.service-hPnkcl: Error opening directory '/var/tmp/systemd-private-708805c760d842af870d2f82461f9971-colord.service-hPnkcl': Permission denied
/var/log/syslog.1:Mar  2 22:09:22 ubu-desk gsd-housekeepin[2237]: Failed to enumerate children of /tmp/systemd-private-708805c760d842af870d2f82461f9971-colord.service-qAVab7: Error opening directory '/tmp/systemd-private-708805c760d842af870d2f82461f9971-colord.service-qAVab7': Permission denied
/var/log/syslog.1:Mar  2 23:09:22 ubu-desk gsd-housekeepin[2237]: Failed to enumerate children of /var/tmp/systemd-private-708805c760d842af870d2f82461f9971-colord.service-hPnkcl: Error opening directory '/var/tmp/systemd-private-708805c760d842af870d2f82461f9971-colord.service-hPnkcl': Permission denied
/var/log/syslog.1:Mar  2 23:09:22 ubu-desk gsd-housekeepin[2237]: Failed to enumerate children of /tmp/systemd-private-708805c760d842af870d2f82461f9971-colord.service-qAVab7: Error opening directory '/tmp/systemd-private-708805c760d842af870d2f82461f9971-colord.service-qAVab7': Permission denied
/var/log/syslog.1:Mar  2 23:40:33 ubu-desk dbus-daemon[1299]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.63' (uid=121 pid=1730 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  2 23:40:33 ubu-desk colord-sane: [bjnp] create_broadcast_socket: ERROR - bind socket to local address failed - Cannot assign requested address
/var/log/syslog.1:Mar  3 10:17:39 ubu-desk dbus-daemon[1302]: [system] Activating via systemd: service name='org.freedesktop.ColorManager' unit='colord.service' requested by ':1.65' (uid=121 pid=1780 comm="/usr/lib/gnome-settings-daemon/gsd-color " label="unconfined")
/var/log/syslog.1:Mar  3 10:17:39 ubu-desk colord-sane: [bjnp] create_broadcast_socket: ERROR - bind socket to local address failed - Cannot assign requested address