最近我安装了新的 Ubuntu 18.04 并进行了一些小的设置。但是，在执行某些操作后，它会不断注销。也就是说，我已经安装了google chrome浏览器并恢复了以前的ubuntu 15.04浏览器数据和扩展。当我想通过下载器扩展下载视频或其他内容时，系统会停止并让我返回登录视图。重新登录后，所有窗口和应用程序都将关闭。如果我想删除或运行某些应用程序的安装，也会发生同样的情况。我的建议是，如果系统遇到一些错误，它会继续注销。需要你的帮助。预先谢谢你
这是发生这种情况时的详细日志：
Aug 2 20:39:15 sa /usr/lib/gdm3/gdm-x-session[20860]: dbus-update-activation-environment: setting _=/usr/bin/dbus-update-activation-environment
Aug 2 20:39:15 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating via systemd: service name='org.gtk.vfs.Daemon' unit='gvfs-daemon.service' requested by ':1.6' (uid=1000 pid=20869 comm="/usr/lib/gnome-session/gnome-session-binary --sess" label="unconfined")
Aug 2 20:39:15 sa systemd[20842]: Starting Virtual filesystem service...
Aug 2 20:39:15 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.gtk.vfs.Daemon'
Aug 2 20:39:15 sa systemd[20842]: Started Virtual filesystem service.
Aug 2 20:39:15 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating via systemd: service name='org.a11y.Bus' unit='at-spi-dbus-bus.service' requested by ':1.9' (uid=1000 pid=20953 comm="/usr/lib/gnome-session/gnome-session-check-acceler" label="unconfined")
Aug 2 20:39:15 sa systemd[20842]: Starting Accessibility services bus...
Aug 2 20:39:15 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.a11y.Bus'
Aug 2 20:39:15 sa systemd[20842]: Started Accessibility services bus.
Aug 2 20:39:15 sa at-spi-bus-launcher[20962]: dbus-daemon[20967]: Activating service name='org.a11y.atspi.Registry' requested by ':1.0' (uid=1000 pid=20953 comm="/usr/lib/gnome-session/gnome-session-check-acceler" label="unconfined")
Aug 2 20:39:15 sa at-spi-bus-launcher[20962]: dbus-daemon[20967]: Successfully activated service 'org.a11y.atspi.Registry'
Aug 2 20:39:15 sa at-spi-bus-launcher[20962]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry
Aug 2 20:39:15 sa gnome-keyring-ssh.desktop[20979]: SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
Aug 2 20:39:15 sa /usr/lib/gdm3/gdm-x-session[20860]: (II) modeset(0): EDID vendor "BOE", prod id 1608
Aug 2 20:39:15 sa /usr/lib/gdm3/gdm-x-session[20860]: (II) modeset(0): Printing DDC gathered Modelines:
Aug 2 20:39:15 sa /usr/lib/gdm3/gdm-x-session[20860]: (II) modeset(0): Modeline "1920x1080"x0.0 141.40 1920 1968 2000 2142 1080 1083 1089 1100 +hsync -vsync (66.0 kHz eP)
Aug 2 20:39:15 sa /usr/lib/gdm3/gdm-x-session[20860]: (II) modeset(0): Modeline "1920x1080"x0.0 113.12 1920 1968 2000 2142 1080 1083 1089 1100 +hsync -vsync (52.8 kHz e)
Aug 2 20:39:15 sa rtkit-daemon[1127]: Successfully made thread 20994 of process 20994 (n/a) owned by '1000' high priority at nice level -11.
Aug 2 20:39:15 sa rtkit-daemon[1127]: Supervising 1 threads of 1 processes of 1 users.
Aug 2 20:39:15 sa rtkit-daemon[1127]: Supervising 1 threads of 1 processes of 1 users.
Aug 2 20:39:15 sa rtkit-daemon[1127]: Successfully made thread 20995 of process 20994 (n/a) owned by '1000' RT at priority 5.
Aug 2 20:39:15 sa rtkit-daemon[1127]: Supervising 2 threads of 1 processes of 1 users.
Aug 2 20:39:15 sa rtkit-daemon[1127]: Supervising 2 threads of 1 processes of 1 users.
Aug 2 20:39:15 sa rtkit-daemon[1127]: Successfully made thread 20996 of process 20994 (n/a) owned by '1000' RT at priority 5.
Aug 2 20:39:15 sa rtkit-daemon[1127]: Supervising 3 threads of 1 processes of 1 users.
Aug 2 20:39:15 sa bluetoothd[843]: Endpoint registered: sender=:1.17910 path=/MediaEndpoint/A2DPSource
Aug 2 20:39:15 sa bluetoothd[843]: Endpoint registered: sender=:1.17910 path=/MediaEndpoint/A2DPSink
Aug 2 20:39:15 sa pulseaudio[20994]: [pulseaudio] backend-ofono.c: Failed to register as a handsfree audio agent with ofono: org.freedesktop.DBus.Error.ServiceUnknown: The name org.ofono was not provided by any .service files
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating service name='org.freedesktop.portal.IBus' requested by ':1.16' (uid=1000 pid=21007 comm="ibus-daemon --xim --panel disable " label="unconfined")
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.freedesktop.portal.IBus'
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating service name='org.gnome.Shell.CalendarServer' requested by ':1.13' (uid=1000 pid=20985 comm="/usr/bin/gnome-shell " label="unconfined")
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating via systemd: service name='org.gnome.evolution.dataserver.Sources5' unit='evolution-source-registry.service' requested by ':1.20' (uid=1000 pid=21027 comm="/usr/lib/gnome-shell/gnome-shell-calendar-server " label="unconfined")
Aug 2 20:39:16 sa systemd[20842]: Starting Evolution source registry...
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating service name='org.gnome.OnlineAccounts' requested by ':1.21' (uid=1000 pid=21031 comm="/usr/lib/evolution/evolution-source-registry " label="unconfined")
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.gnome.evolution.dataserver.Sources5'
Aug 2 20:39:16 sa systemd[20842]: Started Evolution source registry.
Aug 2 20:39:16 sa goa-daemon[21039]: goa-daemon version 3.28.0 starting
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.gnome.Shell.CalendarServer'
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating service name='org.gnome.Identity' requested by ':1.22' (uid=1000 pid=21039 comm="/usr/lib/gnome-online-accounts/goa-daemon " label="unconfined")
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.gnome.OnlineAccounts'
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.gnome.Identity'
Aug 2 20:39:16 sa dbus-daemon[821]: [system] Activating via systemd: service name='org.freedesktop.GeoClue2' unit='geoclue.service' requested by ':1.17906' (uid=1000 pid=20985 comm="/usr/bin/gnome-shell " label="unconfined")
Aug 2 20:39:16 sa systemd[1]: Starting Location Lookup Service...
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating service name='ca.desrt.dconf' requested by ':1.13' (uid=1000 pid=20985 comm="/usr/bin/gnome-shell " label="unconfined")
Aug 2 20:39:16 sa dbus-daemon[821]: [system] Successfully activated service 'org.freedesktop.GeoClue2'
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'ca.desrt.dconf'
Aug 2 20:39:16 sa systemd[1]: Started Location Lookup Service.
Aug 2 20:39:16 sa wpa_supplicant[840]: dbus: fill_dict_with_properties dbus_interface=fi.w1.wpa_supplicant1.Interface dbus_property=Stations getter failed
Aug 2 20:39:16 sa gnome-shell[20985]: Telepathy is not available, chat integration will be disabled.
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating via systemd: service name='org.gtk.vfs.UDisks2VolumeMonitor' unit='gvfs-udisks2-volume-monitor.service' requested by ':1.13' (uid=1000 pid=20985 comm="/usr/bin/gnome-shell " label="unconfined")
Aug 2 20:39:16 sa systemd[20842]: Starting Virtual filesystem service - disk device monitor...
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.gtk.vfs.UDisks2VolumeMonitor'
Aug 2 20:39:16 sa systemd[20842]: Started Virtual filesystem service - disk device monitor.
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating via systemd: service name='org.gtk.vfs.GoaVolumeMonitor' unit='gvfs-goa-volume-monitor.service' requested by ':1.13' (uid=1000 pid=20985 comm="/usr/bin/gnome-shell " label="unconfined")
Aug 2 20:39:16 sa systemd[20842]: Starting Virtual filesystem service - GNOME Online Accounts monitor...
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.gtk.vfs.GoaVolumeMonitor'
Aug 2 20:39:16 sa systemd[20842]: Started Virtual filesystem service - GNOME Online Accounts monitor.
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating via systemd: service name='org.gtk.vfs.AfcVolumeMonitor' unit='gvfs-afc-volume-monitor.service' requested by ':1.13' (uid=1000 pid=20985 comm="/usr/bin/gnome-shell " label="unconfined")
Aug 2 20:39:16 sa systemd[20842]: Starting Virtual filesystem service - Apple File Conduit monitor...
Aug 2 20:39:16 sa gvfs-afc-volume-monitor[21070]: Volume monitor alive
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.gtk.vfs.AfcVolumeMonitor'
Aug 2 20:39:16 sa systemd[20842]: Started Virtual filesystem service - Apple File Conduit monitor.
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating via systemd: service name='org.gtk.vfs.MTPVolumeMonitor' unit='gvfs-mtp-volume-monitor.service' requested by ':1.13' (uid=1000 pid=20985 comm="/usr/bin/gnome-shell " label="unconfined")
Aug 2 20:39:16 sa systemd[20842]: Starting Virtual filesystem service - Media Transfer Protocol monitor...
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.gtk.vfs.MTPVolumeMonitor'
Aug 2 20:39:16 sa systemd[20842]: Started Virtual filesystem service - Media Transfer Protocol monitor.
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating via systemd: service name='org.gtk.vfs.GPhoto2VolumeMonitor' unit='gvfs-gphoto2-volume-monitor.service' requested by ':1.13' (uid=1000 pid=20985 comm="/usr/bin/gnome-shell " label="unconfined")
Aug 2 20:39:16 sa systemd[20842]: Starting Virtual filesystem service - digital camera monitor...
Aug 2 20:39:16 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.gtk.vfs.GPhoto2VolumeMonitor'
Aug 2 20:39:16 sa systemd[20842]: Started Virtual filesystem service - digital camera monitor.
Aug 2 20:39:16 sa spice-vdagent[21112]: Cannot access vdagent virtio channel /dev/virtio-ports/com.redhat.spice.0
Aug 2 20:39:16 sa gnome-shell[20985]: JS WARNING: [/usr/share/gnome-shell/extensions/[email protected]/appIcons.js 1027]: unreachable code after return statement
Aug 2 20:39:16 sa gnome-session[20869]: gnome-session-binary[20869]: WARNING: App 'spice-vdagent.desktop' exited with code 1
Aug 2 20:39:16 sa gnome-session-binary[20869]: WARNING: App 'spice-vdagent.desktop' exited with code 1
Aug 2 20:39:16 sa dbus-daemon[821]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.17918' (uid=1000 pid=21089 comm="/usr/lib/gnome-settings-daemon/gsd-rfkill " label="unconfined")
Aug 2 20:39:16 sa systemd[1]: Starting Hostname Service...
Aug 2 20:39:17 sa gsd-sharing[21095]: Failed to StopUnit service: GDBus.Error:org.freedesktop.systemd1.NoSuchUnit: Unit gnome-user-share-webdav.service not loaded.
Aug 2 20:39:17 sa gsd-sharing[21095]: Failed to StopUnit service: GDBus.Error:org.freedesktop.systemd1.NoSuchUnit: Unit rygel.service not loaded.
Aug 2 20:39:17 sa gsd-sharing[21095]: Failed to StopUnit service: GDBus.Error:org.freedesktop.systemd1.NoSuchUnit: Unit gnome-remote-desktop.service not loaded.
Aug 2 20:39:17 sa gsd-xsettings[21108]: Failed to get current display configuration state: GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Name "org.gnome.Mutter.DisplayConfig" does not exist
Aug 2 20:39:17 sa gsd-xsettings[21108]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa gsd-power[21085]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa gsd-clipboard[21121]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa gsd-color[21122]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa gsd-media-keys[21133]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa gsd-keyboard[21130]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa gsd-wacom[21115]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa dbus-daemon[821]: [system] Successfully activated service 'org.freedesktop.hostname1'
Aug 2 20:39:17 sa systemd[1]: Started Hostname Service.
Aug 2 20:39:17 sa gnome-session-binary[20869]: Entering running state
Aug 2 20:39:17 sa kernel: [17438.686486] rfkill: input handler disabled
Aug 2 20:39:17 sa gsd-color[1169]: failed to set screen _ICC_PROFILE: Failed to open file “/home/sa/.local/share/icc/edid-72076249bd7ea37abad4c5c04b1d1cb6.icc”: Permission denied
Aug 2 20:39:17 sa gsd-power[21085]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa gsd-media-keys[21133]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa gsd-keyboard[21130]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa gsd-color[21122]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa gsd-wacom[21115]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating via systemd: service name='org.gnome.evolution.dataserver.Calendar7' unit='evolution-calendar-factory.service' requested by ':1.20' (uid=1000 pid=21027 comm="/usr/lib/gnome-shell/gnome-shell-calendar-server " label="unconfined")
Aug 2 20:39:17 sa systemd[20842]: Starting Evolution calendar service...
Aug 2 20:39:17 sa gsd-clipboard[21121]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa gnome-software[21174]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa dbus-daemon[821]: [system] Activating via systemd: service name='org.freedesktop.locale1' unit='dbus-org.freedesktop.locale1.service' requested by ':1.17927' (uid=1000 pid=21130 comm="/usr/lib/gnome-settings-daemon/gsd-keyboard " label="unconfined")
Aug 2 20:39:17 sa systemd[1]: Starting Locale Service...
Aug 2 20:39:17 sa nautilus-deskto[21185]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating service name='org.freedesktop.FileManager1' requested by ':1.50' (uid=1000 pid=21185 comm="nautilus-desktop " label="unconfined")
Aug 2 20:39:17 sa nautilus[21219]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa dbus-daemon[821]: [system] Successfully activated service 'org.freedesktop.locale1'
Aug 2 20:39:17 sa systemd[1]: Started Locale Service.
Aug 2 20:39:17 sa gsd-xsettings[21108]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:17 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.freedesktop.FileManager1'
Aug 2 20:39:17 sa gnome-shell[20985]: Error looking up permission: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.impl.portal.PermissionStore was not provided by any .service files
Aug 2 20:39:17 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.gnome.evolution.dataserver.Calendar7'
Aug 2 20:39:17 sa systemd[20842]: Started Evolution calendar service.
Aug 2 20:39:17 sa gsd-color[1169]: failed to set screen _ICC_PROFILE: Failed to open file “/home/sa/.local/share/icc/edid-72076249bd7ea37abad4c5c04b1d1cb6.icc”: Permission denied
Aug 2 20:39:18 sa nautilus-deskto[21185]: Can not get _NET_WORKAREA
Aug 2 20:39:18 sa nautilus-deskto[21185]: Can not determine workarea, guessing at layout
Aug 2 20:39:18 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating via systemd: service name='org.gnome.evolution.dataserver.AddressBook9' unit='evolution-addressbook-factory.service' requested by ':1.56' (uid=1000 pid=21235 comm="/usr/lib/evolution/evolution-calendar-factory-subp" label="unconfined")
Aug 2 20:39:18 sa systemd[20842]: Starting Evolution address book service...
Aug 2 20:39:18 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.gnome.evolution.dataserver.AddressBook9'
Aug 2 20:39:18 sa systemd[20842]: Started Evolution address book service.
Aug 2 20:39:18 sa nautilus-deskto[21185]: Called "net usershare info" but it failed: Failed to execute child process “net” (No such file or directory)
Aug 2 20:39:18 sa gnome-shell[20985]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:18 sa gnome-shell[20985]: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:18 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Activating via systemd: service name='org.gtk.vfs.Metadata' unit='gvfs-metadata.service' requested by ':1.50' (uid=1000 pid=21185 comm="nautilus-desktop " label="unconfined")
Aug 2 20:39:18 sa systemd[20842]: Starting Virtual filesystem metadata service...
Aug 2 20:39:18 sa dbus-daemon[20866]: [session uid=1000 pid=20866] Successfully activated service 'org.gtk.vfs.Metadata'
Aug 2 20:39:18 sa systemd[20842]: Started Virtual filesystem metadata service.
Aug 2 20:39:19 sa gnome-software[21174]: plugin appstream took 1.5 seconds to do setup
Aug 2 20:39:19 sa gnome-software[21174]: enabled plugins: systemd-updates, packagekit-refine-repos, packagekit-upgrade, packagekit, packagekit-local, ubuntuone, os-release, packagekit-refresh, desktop-categories, shell-extensions, packagekit-proxy, packagekit-url-to-app, packagekit-offline, fwupd, appstream, ubuntu-reviews, packagekit-refine, hardcoded-popular, hardcoded-blacklist, rewrite-resource, steam, hardcoded-featured, desktop-menu-path, generic-updates, modalias, packagekit-history, snap, provenance, provenance-license, icons, key-colors, key-colors-metadata
Aug 2 20:39:19 sa gnome-software[21174]: disabled plugins: dpkg, repos, dummy, odrs, epiphany
Aug 2 20:39:19 sa gnome-software[21174]: failed to call gs_plugin_add_updates_historical on fwupd: failed to build result for cd273169181d707255b4afd0f0bec9fc898e557f
Aug 2 20:39:19 sa gnome-shell[20985]: GNOME Shell started at Thu Aug 02 2018 20:39:16 GMT+0500
Aug 2 20:39:19 sa PackageKit: get-updates transaction /481_beedabeb from uid 1000 finished with success after 545ms
Aug 2 20:39:19 sa gnome-software[21174]: Only 0 apps for recent list, hiding
Aug 2 20:39:20 sa PackageKit: resolve transaction /482_bddaacde from uid 1000 finished with success after 383ms
Aug 2 20:39:20 sa org.gnome.Shell.desktop[20985]: (google-chrome-stable:21304): Gtk-WARNING **: 20:39:20.899: Theme parsing error: gtk-main.css:73:38: Failed to import: Error opening file /usr/share/themes/Radiance/gtk-3.20/apps/gnome-builder.css: No such file or directory
Aug 2 20:39:21 sa PackageKit: search-file transaction /483_bedcaabc from uid 1000 finished with success after 516ms
Aug 2 20:39:21 sa PackageKit: search-file transaction /484_ebebbddb from uid 1000 finished with success after 668ms
Aug 2 20:39:22 sa PackageKit: search-file transaction /485_eeebaebe from uid 1000 finished with success after 764ms
Aug 2 20:39:23 sa PackageKit: search-file transaction /486_cbcbceae from uid 1000 finished with success after 735ms
Aug 2 20:39:24 sa PackageKit: search-file transaction /487_bdcdeacd from uid 1000 finished with success after 584ms
Aug 2 20:39:24 sa PackageKit: search-file transaction /488_ebbdbbbd from uid 1000 finished with success after 588ms
Aug 2 20:39:25 sa PackageKit: search-file transaction /489_dcecdbec from uid 1000 finished with success after 747ms
Aug 2 20:39:26 sa PackageKit: search-file transaction /490_cdcdcccd from uid 1000 finished with success after 915ms
Aug 2 20:39:27 sa PackageKit: search-file transaction /491_daacabcb from uid 1000 finished with success after 1084ms
Aug 2 20:39:29 sa PackageKit: get-details transaction /492_bdcddbca from uid 1000 finished with success after 939ms
解决方案：经过一番尝试终于解决了。我刚刚重新启动了系统主题。具体来说，影响是
动画、图标、光标。
尝试重新加载它们
答案1
解决方案：经过一番尝试终于解决了。我刚刚重新启动了系统主题。具体来说，影响是动画、图标、光标。
尝试重新加载它们