我已经用一些我不记得的命令从 gdm 中删除了 Ubuntu 紫色，升级到 Ubuntu 21.10 后它又返回了。
我试过sudo update-alternatives --config gdm3.css了：无济于事。该命令返回“update-alternatives: error: no alternatives for gdm3.css”。
有什么建议么？
在运行 docker 进行刮擦/飞溅时，我不断收到“Empty Trash”的通知，这表明磁盘空间不足。
几秒钟后，GUI 卡住了。我通过电源按钮为笔记本电脑供电。
然后在启动时，我收到这样的消息
Started GNOME display manager... and deal with any system changes..p link was shut down.....
所以我尝试了这个结果
如图所示，我也尝试使用此答案进行清理，但没有得到任何结果。
更新
我的硬盘看起来像这样
我正在使用 Ubuntu 18.04 仿生并安装了 xfce4 包。但是，当我在登录管理器中选择“Xfce session”时，它不会让我登录到 Xfce4，而是让我直接回到登录窗口。为什么会这样，我该如何解决？
从 Ubuntu 18.04 更新到 20.04 后，一切正常。我的笔记本有两个用户，他们可以使用单独的用户配置文件访问客户端。
取消订阅我的个人资料后，重新启动或类似情况后是否无法再次登录。用户访问登录页面上不存在该用户。但是可以使用“不可见”功能，添加我的用户名，密码并切换到“通过Wayland登录”。
如何让我的用户回到默认用户访问列表并在没有 Wayland 方式的情况下以默认方式登录？
我试过什么？
我尝试通过右下角的 Cogwheel 进行切换，但是通过“Ubuntu”而不是“Ubuntu via Wayland”的默认登录将不起作用。我又回到了登录界面。另外，我尝试通过 阅读和更改/etc/gdm3/custom.conf并关闭 Wayland 选项WaylandEnable=false，但没有任何更改。
我创建了一个新的“访客”帐户，并且可以正常登录。这确认原始帐户的主文件夹中存在导致登录循环的内容。所以我的意思是，问题是我的/home/username目录。但我找不到任何问题。我搜索*authority文件，但此目录中没有文件。
我新安装了 Ubuntu 20.04，定制了 GDM3，安装了我需要的软件，一切似乎都很成功。但是，当我重新启动时，Ubuntu 出于某种原因要求我创建一个新用户。我无法绕过这一点，必须创建用户，之后我才能正常注销。然后登录屏幕显示新用户和正确的原始用户，我可以登录并继续。
我搜索了 Ask Ubuntu，发现了 1 个类似问题的实例。不幸的是，那里提出的解决方案（重新安装 ubuntu-desktop）对我不起作用。
图形驱动程序是 Nvidia 440.100，如果相关的话。
有人可以建议采取行动来解决这个问题吗？我不愿意重新安装 Ubuntu，因为有相当多的定制。除了这个新用户问题，到目前为止它运行良好。
[编辑] Oct.1/20 这个问题在 Ubuntu 18 和 19 中是已知的，并且似乎与 [this bug][1] 相同。
我发现在研究为什么在启动时，系统日志显示以下行：
Oct 1 15:39:49 mynode tracker-miner-f[1871]: (Sparql buffer) Error in task 0 (file:///run/gnome-initial-setup) of the array-update: There is not enough space on the file system for update operations
Oct 1 15:39:49 mynode tracker-miner-f[1871]: Could not execute sparql: There is not enough space on the file system for update operations
Oct 1 15:39:50 mynode tracker-miner-f[1871]: (Sparql buffer) Error in task 0 (file:///run/gnome-initial-setup) of the array-update: There is not enough space on the file system for update operations
Oct 1 15:39:50 mynode tracker-miner-f[1871]: Could not execute sparql: There is not enough space on the file system for update operations
Oct 1 15:39:50 mynode tracker-miner-f[1871]: (Sparql buffer) Error in task 0 (file:///run/gnome-initial-setup/gnome-initial-setup-uid) of the array-update: There is not enough space on the file system for update operations
Oct 1 15:39:50 mynode tracker-miner-f[1871]: Could not execute sparql: There is not enough space on the file system for update operations
该消息具有误导性，因为分区仅使用了 20%。
我对 gnome-shell 和 gdm 有疑问。我的外壳有时（不可重现的 atm）会冻结。在某些情况下，gdm 将重新启动，我退出并且所有程序都被杀死。再次登录时，例如，铬告诉我，上次它没有正确退出。
我试图在 dmesg 和 journalctl 中查找一些信息，但找不到任何可以帮助我解决此问题的 www 搜索结果。
接下来我该怎么办？
元信息
系统
lsb_release -a
LSB Version: core-11.1.0ubuntu2-noarch:printing-11.1.0ubuntu2-noarch:security-11.1.0ubuntu2-noarch
Distributor ID: Ubuntu
Description: Ubuntu 20.04.1 LTS
Release: 20.04
Codename: focal
gdm3:
Installed: 3.34.1-1ubuntu1
Candidate: 3.34.1-1ubuntu1
Version table:
*** 3.34.1-1ubuntu1 500
500 http://de.archive.ubuntu.com/ubuntu focal/main amd64 Packages
100 /var/lib/dpkg/status
gnome-shell:
Installed: 3.36.4-1ubuntu1~20.04.2
Candidate: 3.36.4-1ubuntu1~20.04.2
Version table:
*** 3.36.4-1ubuntu1~20.04.2 500
500 http://de.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
100 /var/lib/dpkg/status
3.36.1-5ubuntu1 500
500 http://de.archive.ubuntu.com/ubuntu focal/main amd64 Packages
日志
Sep 16 10:15:21 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Successfully activated service 'org.gnome.Nautilus'
Sep 16 10:15:22 userlaptop org.gnome.Nautilus[57932]: ImportError: bad magic number in 'nautilus-gsconnect': b'\x03\xf3\r\n'
Sep 16 10:15:22 userlaptop org.gnome.Nautilus[57932]: Traceback (most recent call last):
Sep 16 10:15:22 userlaptop org.gnome.Nautilus[57932]: File "/usr/share/nautilus-python/extensions/kdeconnect-share.py", line 37, in <module>
Sep 16 10:15:22 userlaptop org.gnome.Nautilus[57932]: i18n = gettext.translation('kdeconnect-nautilus-extension')
Sep 16 10:15:22 userlaptop org.gnome.Nautilus[57932]: File "/usr/lib/python3.8/gettext.py", line 603, in translation
Sep 16 10:15:22 userlaptop org.gnome.Nautilus[57932]: raise FileNotFoundError(ENOENT,
Sep 16 10:15:22 userlaptop org.gnome.Nautilus[57932]: FileNotFoundError: [Errno 2] No translation file found for domain: 'kdeconnect-nautilus-extension'
Sep 16 10:15:22 userlaptop org.gnome.Nautilus[57932]: During handling of the above exception, another exception occurred:
Sep 16 10:15:22 userlaptop org.gnome.Nautilus[57932]: Traceback (most recent call last):
Sep 16 10:15:22 userlaptop org.gnome.Nautilus[57932]: File "/usr/share/nautilus-python/extensions/kdeconnect-share.py", line 40, in <module>
Sep 16 10:15:22 userlaptop org.gnome.Nautilus[57932]: print('kdeconnect-nautilus: {0}'.format(e.strerr))
Sep 16 10:15:22 userlaptop org.gnome.Nautilus[57932]: AttributeError: 'FileNotFoundError' object has no attribute 'strerr'
Sep 16 10:15:22 userlaptop nautilus[57932]: libnautilus-cloud-extension.so init
Sep 16 10:15:22 userlaptop nautilus[57932]: thread_start [271]:bind successfull for path = '/home/user/.cloud-ipc-socket'
Sep 16 10:15:22 userlaptop nautilus[57932]: thread_start [275]:running with sock 27.....
Sep 16 10:15:22 userlaptop nautilus[57932]: setDumpCacheReady [95]:Set dump cache as ready
Sep 16 10:15:22 userlaptop dbus-daemon[1061]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.653' (uid=1000 pid=57932 comm="/usr/bin/nautilus --gapplication-service " label="unconfined")
Sep 16 10:15:22 userlaptop systemd[1]: Starting Hostname Service...
Sep 16 10:15:22 userlaptop dbus-daemon[1061]: [system] Successfully activated service 'org.freedesktop.hostname1'
Sep 16 10:15:22 userlaptop systemd[1]: Started Hostname Service.
Sep 16 10:15:22 userlaptop nautilus[57932]: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.
Sep 16 10:15:22 userlaptop nautilus[57932]: Unexpected plugin response. This probably indicates a bug in a Nautilus extension: handle=0x55edf4510510
[...]
Sep 16 10:15:22 userlaptop nautilus[57932]: Unexpected plugin response. This probably indicates a bug in a Nautilus extension: handle=0x55edf49555e0
Sep 16 10:15:25 userlaptop org.gnome.Nautilus[57932]: Traceback (most recent call last):
Sep 16 10:15:25 userlaptop org.gnome.Nautilus[57932]: File "/usr/share/nautilus-python/extensions/clamtk-gnome.py", line 64, in get_file_items
Sep 16 10:15:25 userlaptop org.gnome.Nautilus[57932]: tip=_('Scan %s for threats...') % file.get_name(),
Sep 16 10:15:25 userlaptop org.gnome.Nautilus[57932]: TypeError: %b requires a bytes-like object, or an object that implements __bytes__, not 'str'
Sep 16 10:15:27 userlaptop nautilus[57932]: Unexpected plugin response. This probably indicates a bug in a Nautilus extension: handle=0x55edf46cd320
[...]
Sep 16 10:15:27 userlaptop nautilus[57932]: Unexpected plugin response. This probably indicates a bug in a Nautilus extension: handle=0x55edf494c980
Sep 16 10:15:28 userlaptop org.gnome.Nautilus[57932]: Traceback (most recent call last):
Sep 16 10:15:28 userlaptop org.gnome.Nautilus[57932]: File "/usr/share/nautilus-python/extensions/clamtk-gnome.py", line 64, in get_file_items
Sep 16 10:15:28 userlaptop org.gnome.Nautilus[57932]: tip=_('Scan %s for threats...') % file.get_name(),
Sep 16 10:15:28 userlaptop org.gnome.Nautilus[57932]: TypeError: %b requires a bytes-like object, or an object that implements __bytes__, not 'str'
Sep 16 10:15:28 userlaptop nautilus[57932]: Unexpected plugin response. This probably indicates a bug in a Nautilus extension: handle=0x55edf49d6490
[...]
Sep 16 10:15:28 userlaptop nautilus[57932]: Unexpected plugin response. This probably indicates a bug in a Nautilus extension: handle=0x55edf4a12bb0
Sep 16 10:15:30 userlaptop org.gnome.Nautilus[57932]: Traceback (most recent call last):
Sep 16 10:15:30 userlaptop org.gnome.Nautilus[57932]: File "/usr/share/nautilus-python/extensions/clamtk-gnome.py", line 64, in get_file_items
Sep 16 10:15:30 userlaptop org.gnome.Nautilus[57932]: tip=_('Scan %s for threats...') % file.get_name(),
Sep 16 10:15:30 userlaptop org.gnome.Nautilus[57932]: TypeError: %b requires a bytes-like object, or an object that implements __bytes__, not 'str'
Sep 16 10:15:30 userlaptop nautilus[57932]: Unexpected plugin response. This probably indicates a bug in a Nautilus extension: handle=0x55edf4a096f0
Sep 16 10:15:30 userlaptop nautilus[57932]: Unexpected plugin response. This probably indicates a bug in a Nautilus extension: handle=0x55edf4a0f6b0
Sep 16 10:15:30 userlaptop nautilus[57932]: Unexpected plugin response. This probably indicates a bug in a Nautilus extension: handle=0x55edf4825030
Sep 16 10:15:35 userlaptop org.gnome.Nautilus[57932]: Traceback (most recent call last):
Sep 16 10:15:35 userlaptop org.gnome.Nautilus[57932]: File "/usr/share/nautilus-python/extensions/clamtk-gnome.py", line 64, in get_file_items
Sep 16 10:15:35 userlaptop org.gnome.Nautilus[57932]: tip=_('Scan %s for threats...') % file.get_name(),
Sep 16 10:15:35 userlaptop org.gnome.Nautilus[57932]: TypeError: %b requires a bytes-like object, or an object that implements __bytes__, not 'str'
Sep 16 10:15:39 userlaptop org.gnome.Nautilus[57932]: Traceback (most recent call last):
Sep 16 10:15:39 userlaptop org.gnome.Nautilus[57932]: File "/usr/share/nautilus-python/extensions/clamtk-gnome.py", line 64, in get_file_items
Sep 16 10:15:39 userlaptop org.gnome.Nautilus[57932]: tip=_('Scan %s for threats...') % file.get_name(),
Sep 16 10:15:39 userlaptop org.gnome.Nautilus[57932]: TypeError: %b requires a bytes-like object, or an object that implements __bytes__, not 'str'
Sep 16 10:15:39 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Activating service name='org.gnome.evince.Daemon' requested by ':1.149' (uid=1000 pid=58342 comm="evince /home/user/Documents/private/WWU/Semesterti" label="/usr/bin/evince (enforce)")
Sep 16 10:15:39 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Successfully activated service 'org.gnome.evince.Daemon'
Sep 16 10:15:47 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Activating via systemd: service name='org.freedesktop.Tracker1.Miner.Extract' unit='tracker-extract.service' requested by ':1.2' (uid=1000 pid=1970 comm="/usr/libexec/tracker-miner-fs " label="unconfined")
Sep 16 10:15:47 userlaptop systemd[1947]: Starting Tracker metadata extractor...
Sep 16 10:15:47 userlaptop tracker-extract[58544]: Set scheduler policy to SCHED_IDLE
Sep 16 10:15:47 userlaptop tracker-extract[58544]: Setting priority nice level to 19
Sep 16 10:15:47 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Successfully activated service 'org.freedesktop.Tracker1.Miner.Extract'
Sep 16 10:15:47 userlaptop systemd[1947]: Started Tracker metadata extractor.
Sep 16 10:15:48 userlaptop gnome-shell[2304]: JS ERROR: TypeError: area is null
padArea@resource:///org/gnome/shell/ui/workspace.js:1101:9
_updateWindowPositions@resource:///org/gnome/shell/ui/workspace.js:1334:20
_realRecalculateWindowPositions@resource:///org/gnome/shell/ui/workspace.js:1311:14
_recalculateWindowPositions/this._positionWindowsId<@resource:///org/gnome/shell/ui/workspace.js:1286:18
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Activating service name='org.gnome.ControlCenter.SearchProvider' requested by ':1.53' (uid=1000 pid=2304 comm="/usr/bin/gnome-shell " label="unconfined")
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Activating service name='org.gnome.Contacts.SearchProvider' requested by ':1.53' (uid=1000 pid=2304 comm="/usr/bin/gnome-shell " label="unconfined")
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Activating service name='org.gnome.Documents' requested by ':1.53' (uid=1000 pid=2304 comm="/usr/bin/gnome-shell " label="unconfined")
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Activating service name='org.gnome.Calculator.SearchProvider' requested by ':1.53' (uid=1000 pid=2304 comm="/usr/bin/gnome-shell " label="unconfined")
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Activating service name='org.gnome.Calendar' requested by ':1.53' (uid=1000 pid=2304 comm="/usr/bin/gnome-shell " label="unconfined")
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Activating service name='org.gnome.Characters.BackgroundService' requested by ':1.53' (uid=1000 pid=2304 comm="/usr/bin/gnome-shell " label="unconfined")
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Activating service name='org.gnome.seahorse.Application' requested by ':1.53' (uid=1000 pid=2304 comm="/usr/bin/gnome-shell " label="unconfined")
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Activating service name='org.gnome.Photos' requested by ':1.53' (uid=1000 pid=2304 comm="/usr/bin/gnome-shell " label="unconfined")
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Successfully activated service 'org.gnome.ControlCenter.SearchProvider'
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Successfully activated service 'org.gnome.seahorse.Application'
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Successfully activated service 'org.gnome.Characters.BackgroundService'
Sep 16 10:15:48 userlaptop dbus-daemon[1061]: [system] Activating via systemd: service name='org.freedesktop.timedate1' unit='dbus-org.freedesktop.timedate1.service' requested by ':1.655' (uid=1000 pid=58575 comm="/usr/bin/gnome-calendar --gapplication-service " label="unconfined")
Sep 16 10:15:48 userlaptop systemd[1]: Starting Time & Date Service...
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Successfully activated service 'org.gnome.Contacts.SearchProvider'
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Successfully activated service 'org.gnome.Photos'
Sep 16 10:15:48 userlaptop gnome-contacts-[58567]: backend-store.vala:435: Error preparing Backend 'telepathy': The name org.freedesktop.Telepathy.AccountManager was not provided by any .service files
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Successfully activated service 'org.gnome.Calculator.SearchProvider'
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Successfully activated service 'org.gnome.Documents'
Sep 16 10:15:48 userlaptop dbus-daemon[1061]: [system] Successfully activated service 'org.freedesktop.timedate1'
Sep 16 10:15:48 userlaptop systemd[1]: Started Time & Date Service.
Sep 16 10:15:48 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Successfully activated service 'org.gnome.Calendar'
Sep 16 10:15:49 userlaptop systemd[1947]: Started Application launched by gnome-shell.
Sep 16 10:15:49 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Activating service name='com.intel.dleyna-renderer' requested by ':1.158' (uid=1000 pid=58582 comm="/usr/bin/gnome-photos --gapplication-service " label="unconfined")
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: dLeyna core version 0.6.0
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: dleyna-renderer-service version 0.6.0
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: Type[0] Level[0x13] Mask[0x4C] Flags[0x4F]
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: Load file [/home/user/.config/dleyna-renderer-service.conf]
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: [General settings]
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: Never Quit: F
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: Connector Name: dbus
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: Port: 0
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: Push host port: 0
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: [Logging settings]
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: Log Type : 0
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: Log Level: 0x13
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: [Network filtering settings]
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: Enabled : F
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: Entries: (null)
Sep 16 10:15:49 userlaptop dbus-daemon[1973]: [session uid=1000 pid=1973] Successfully activated service 'com.intel.dleyna-renderer'
Sep 16 10:15:49 userlaptop dleyna-renderer-service[58758]: Calling GetRenderers method
Sep 16 10:15:50 userlaptop dleyna-renderer-service[58758]: Client :1.158 lost
Sep 16 10:15:51 userlaptop dleyna-renderer-service[58758]: dLeyna: Exit
Sep 16 10:15:52 userlaptop systemd[1]: systemd-hostnamed.service: Succeeded.
Sep 16 10:15:56 userlaptop gnome-shell[2304]: Window manager warning: WM_TRANSIENT_FOR window 0x52003d8 for 0x520044b window override-redirect is an override-redirect window and this is not correct according to the standard, so we'll fallback to the first non-override-redirect window 0x5200073.
Sep 16 10:15:56 userlaptop gnome-shell[2304]: Window manager warning: WM_TRANSIENT_FOR window 0x52003d8 for 0x5200469 window override-redirect is an override-redirect window and this is not correct according to the standard, so we'll fallback to the first non-override-redirect window 0x5200073.
Sep 16 10:15:57 userlaptop systemd[1947]: tracker-extract.service: Succeeded.
Sep 16 10:16:08 userlaptop systemd[1]: Starting Process error reports when automatic reporting is enabled...
Sep 16 10:16:08 userlaptop whoopsie-upload-all[59188]: ERROR: cannot load /var/crash/_usr_lib_xorg_Xorg.0.crash: not enough values to unpack (expected 2, got 1)
Sep 16 10:16:08 userlaptop whoopsie-upload-all[59188]: /var/crash/_usr_libexec_tracker-miner-fs.1000.crash already marked for upload, skipping
Sep 16 10:16:08 userlaptop whoopsie-upload-all[59188]: /var/crash/_usr_bin_git.1000.crash already marked for upload, skipping
Sep 16 10:16:08 userlaptop whoopsie-upload-all[59188]: skipping, not a crash
Sep 16 10:16:08 userlaptop whoopsie-upload-all[59188]: /var/crash/_usr_bin_nautilus.1000.crash already marked for upload, skipping
Sep 16 10:16:08 userlaptop whoopsie-upload-all[59188]: /var/crash/_usr_lib_git-core_git.1000.crash already marked for upload, skipping
Sep 16 10:16:08 userlaptop whoopsie-upload-all[59188]: /var/crash/_usr_bin_mypaint.1000.crash already marked for upload, skipping
Sep 16 10:16:08 userlaptop whoopsie-upload-all[59188]: /var/crash/_usr_share_atom_atom.1000.crash already marked for upload, skipping
Sep 16 10:16:08 userlaptop whoopsie-upload-all[59188]: All reports processed
Sep 16 10:16:08 userlaptop systemd[1]: apport-autoreport.service: Succeeded.
Sep 16 10:16:08 userlaptop systemd[1]: Finished Process error reports when automatic reporting is enabled.
Sep 16 10:16:15 userlaptop gnome-calendar[58575]: gnome-calendar: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop gimp.desktop[58721]: gimp-2.10: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop org.gnome.Chara[58581]: org.gnome.Characters.BackgroundService: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop evince[58342]: evince: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop gnome-control-c[58565]: gnome-control-center-search-provider: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop seahorse[58580]: seahorse: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop nautilus[57932]: org.gnome.Nautilus: Fatal IO error 104 (Connection reset by peer) on X server :1.
Sep 16 10:16:15 userlaptop update-notifier[6401]: update-notifier: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop kdeconnectd.desktop[2619]: The X11 connection broke (error 1). Did the X11 server die?
Sep 16 10:16:15 userlaptop gnome-terminal-[4062]: gnome-terminal-server: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop thunderbird[4196]: thunderbird: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop gsd-wacom[2547]: gsd-wacom: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop chromium_chromium.desktop[4067]: [4067:4067:0916/101615.180877:ERROR:x11_error_handler.cc(64)] X IO error received (X server probably went away)
Sep 16 10:16:15 userlaptop gsd-power[2533]: gsd-power: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop gsd-xsettings[2558]: gsd-xsettings: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop gsd-keyboard[2531]: gsd-keyboard: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop gsd-color[2525]: gsd-color: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop evolution-alarm[2594]: evolution-alarm-notify: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop systemd[1947]: gsd-wacom.service: Main process exited, code=exited, status=1/FAILURE
Sep 16 10:16:15 userlaptop systemd[1947]: gsd-wacom.service: Failed with result 'exit-code'.
Sep 16 10:16:15 userlaptop systemd[1947]: Stopped target GNOME Wacom handling.
Sep 16 10:16:15 userlaptop gsd-media-keys[2532]: gsd-media-keys: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop keepass2.desktop[4325]: cli: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop at-spi-bus-launcher[2249]: X connection to :1 broken (explicit kill or server shutdown).
Sep 16 10:16:15 userlaptop pulseaudio[1968]: X connection to :1 broken (explicit kill or server shutdown).
Sep 16 10:16:15 userlaptop xdg-desktop-por[2275]: xdg-desktop-portal-gtk: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
Sep 16 10:16:15 userlaptop script-fu[58827]: script-fu: gimp_wire_read(): error
Sep 16 10:16:15 userlaptop systemd[1947]: gsd-keyboard.service: Main process exited, code=exited, status=1/FAILURE
Sep 16 10:16:15 userlaptop systemd[1947]: gsd-keyboard.service: Failed with result 'exit-code'.
Sep 16 10:16:15 userlaptop systemd[1947]: Stopped target GNOME Keyboard handling.
Sep 16 10:16:15 userlaptop systemd[1947]: gsd-power.service: Main process exited, code=exited, status=1/FAILURE
Sep 16 10:16:15 userlaptop systemd[1947]: gsd-power.service: Failed with result 'exit-code'.
Sep 16 10:16:15 userlaptop systemd[1947]: Stopped target GNOME Power management handling.
Sep 16 10:16:15 userlaptop systemd[1947]: pulseaudio.service: Main process exited, code=exited, status=1/FAILURE
Sep 16 10:16:15 userlaptop systemd[1947]: pulseaudio.service: Failed with result 'exit-code'.
Sep 16 10:16:15 userlaptop systemd[1947]: gnome-terminal-server.service: Main process exited, code=exited, status=1/FAILURE
Sep 16 10:16:15 userlaptop systemd[1947]: gnome-terminal-server.service: Failed with result 'exit-code'.
Sep 16 10:16:15 userlaptop systemd[1947]: Stopped target GNOME XSettings.
Sep 16 10:16:15 userlaptop systemd[1947]: gsd-media-keys.service: Main process exited, code=exited, status=1/FAILURE
Sep 16 10:16:15 userlaptop systemd[1947]: gsd-media-keys.service: Failed with result 'exit-code'.
Sep 16 10:16:15 userlaptop systemd[1947]: xdg-desktop-portal-gtk.service: Main process exited, code=exited, status=1/FAILURE
Sep 16 10:16:15 userlaptop systemd[1947]: xdg-desktop-portal-gtk.service: Failed with result 'exit-code'.
Sep 16 10:16:15 userlaptop systemd[1947]: gsd-color.service: Main process exited, code=exited, status=1/FAILURE
Sep 16 10:16:15 userlaptop systemd[1947]: gsd-color.service: Failed with result 'exit-code'.
Sep 16 10:16:15 userlaptop chromium_chromium.desktop[4802]: [4802:4802:0916/101615.228923:ERROR:x11_util.cc(112)] X IO error received (X server probably went away)
Sep 16 10:16:15 userlaptop systemd[1947]: gsd-xsettings.service: Main process exited, code=exited, status=1/FAILURE
Sep 16 10:16:15 userlaptop systemd[1947]: gsd-xsettings.service: Failed with result 'exit-code'.
Sep 16 10:16:15 userlaptop systemd[1947]: Stopped GNOME XSettings.
Sep 16 10:16:15 userlaptop systemd[1947]: gsd-xsettings.service: Triggering OnFailure= dependencies.
Sep 16 10:16:15 userlaptop systemd[1947]: gnome-launched-gimp.desktop-58721.scope: Succeeded.
Sep 16 10:16:15 userlaptop systemd[1947]: gnome-launched-keepass2.desktop-4325.scope: Succeeded.
Sep 16 10:16:15 userlaptop systemd[1947]: Stopped target GNOME Color management.
Sep 16 10:16:15 userlaptop systemd[1947]: Stopped target GNOME Media keys handling.
Sep 16 10:16:15 userlaptop systemd[1947]: Started GNOME Session Failed lockdown screen (user).
Sep 16 10:16:15 userlaptop systemd[1947]: Reached target GNOME Session Failed.
Sep 16 10:16:15 userlaptop gsd-color[1760]: failed to connect to device: Failed to connect to missing device /org/freedesktop/ColorManager/devices/xrandr_AU_Optronics_user_1000
Sep 16 10:16:15 userlaptop gsd-color[1760]: failed to connect to device: Failed to connect to missing device /org/freedesktop/ColorManager/devices/xrandr_Iiyama_North_America_PL2273HDS_0_user_1000
Sep 16 10:16:15 userlaptop gsd-color[1760]: failed to connect to device: Failed to connect to missing device /org/freedesktop/ColorManager/devices/xrandr_Samsung_Electric_Company_U28E850_HTPJ301989_user_1000
Sep 16 10:16:15 userlaptop gnome-session-failed[59368]: Unable to init server: Could not connect: Connection refused
Sep 16 10:16:15 userlaptop gnome-session-f[59368]: Cannot open display:
Sep 16 10:16:15 userlaptop acpid[1053]: client 2062[0:0] has disconnected
更新 11.55 CEST
我找到了一个 xorg 崩溃文件并提交了崩溃报告：
我从其他帖子中了解到，您可以通过修改提取二进制文件时获得的 css 选择#lockDialogGroup器来更改登录屏幕背景等。gdm3.css.gresource
在锁定屏幕（屏幕屏蔽）中更改时钟/时间字体的等价物是什么？我尝试改变.unlock-dialog-clock，.unlock-dialog-clock-time但效果不大。我是否针对正确的选择器？
讨论后编辑：
我的工作流程如下：
提取/编辑/编译~/.local/share/gnome-shell/theme/Pop-modified，这是在版本控制下（见下文）：
要应用更改，我运行以下命令：
sudo cp ~/.local/share/gnome-shell/theme/Pop-modified/gnome-shell-theme.gresource /usr/share/gnome-shell/theme/Pop-modified/gnome-shell-theme.gresource
这是gdm3-theme.gresource指向的地方，使用update-alternatives（见下文）：
➜ update-alternatives --config gdm3-theme.gresource
There are 3 choices for the alternative gdm3-theme.gresource (providing /usr/share/gnome-shell/gdm3-theme.gresource).
Selection Path Priority Status
------------------------------------------------------------
0 /usr/share/gnome-shell/theme/Pop/gnome-shell-theme.gresource 20 auto mode
1 /usr/share/gnome-shell/gnome-shell-theme.gresource 10 manual mode
* 2 /usr/share/gnome-shell/theme/Pop-modified/gnome-shell-theme.gresource 0 manual mode
3 /usr/share/gnome-shell/theme/Pop/gnome-shell-theme.gresource 20 manual mode
实际编辑如下：
gdm3.css将和分别重命名gnome-shell.css为gdm3-original.css和gnome-shell-original.css。创建名为
gdm3.cssand的新文件gnome-shell.css，导入原始 css 文件并对这些文件进行所有所需的更改。
目前，我所做的编辑#lockDialogGroup是有效的，但不是.unlock-dialog-clock.
GNOME 外壳版本：
➜ gnome-shell --version
GNOME Shell 3.36.3
内容/usr/share/gnome-shell/modes：
➜ ls /usr/share/gnome-shell/modes
initial-setup.json pop.json ubuntu.json
在 18.04.4 上安装good-bye-gdm-flick GNOME 扩展后，我无法再登录。登录后，只显示紫色屏幕（鼠标光标处于活动状态）。
我的下一步行动是卸载（删除）或禁用扩展，但据我所知，这不能全局完成，只能在用户的主目录中完成
~/.local/share/gnome-shell/extensions
但是用户主目录是加密的，所以如果我在恢复模式下打开 root shell，我无法删除扩展。
我设法将解密的用户数据挂载到/tmpwith ecryptfs-recover-private，所以我的问题是：
如果我在目录中编辑恢复的数据/tmp，这对加密数据有影响吗？即是否可以通过这种方式删除扩展名，或者恢复的数据只是原始数据的副本？
如果是这样，是否可以以任何方式删除/修改加密主目录中的文件？
或者是否有可能以某种方式全局禁用 gnome 扩展，以便登录后不执行错误代码？
编辑：
@ashvatthama 通过 TTY 登录的答案奏效了！
给未来读者的小提示：不知道这是否只是一个小故障，但我必须先更改为 lightdm，然后才能在登录屏幕上打开 TTY。（我dpkg-reconfigure lightdm在恢复模式下通过 root shell 执行此操作）。
我的桌面上正在运行一个幻灯片（存储在 中~/.local/share/shotwell/wallpaper/wallpaper.xml），它也显示在锁定屏幕中。
从 20.04 开始，锁屏中的当前图像有模糊效果。
我只找到了如何在锁定屏幕上使用另一个图像而不模糊的解决方案，但这会删除幻灯片。
如何去除模糊但保留幻灯片？